Common Weakness Enumeration
CWE-346
Allowed-with-ReviewOrigin Validation Error
Abstraction: Class · Status: Draft
The product does not properly verify that the source of data or communication is valid.
909 vulnerabilities reference this CWE, most recent first.
CVE-2026-70599 (GCVE-0-2026-70599)
Vulnerability from cvelistv5 – Published: 2026-08-05 15:36 – Updated: 2026-08-05 18:41
VLAI
EPSS
VEX
Title
Electron: Permission Check Handler Receives Main Frame Origin Instead of Requesting Iframe Origin
Summary
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1, serial-port and media permission checks made from an iframe passed the top-level frame origin to session.setPermissionCheckHandler instead of the requesting iframe origin. Origin-based handler logic could grant a cross-origin iframe device access intended only for the top-level origin. This issue is fixed in 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/electron/electron/security/adv… | x_refsource_CONFIRM |
| https://github.com/electron/electron/commit/0cbdf… | x_refsource_MISC |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-70599",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-05T18:13:54.699962Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T18:41:57.567Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "electron",
"vendor": "electron",
"versions": [
{
"status": "affected",
"version": "\u003c 39.8.7"
},
{
"status": "affected",
"version": "\u003e= 40.0.0-alpha.1, \u003c 40.9.0"
},
{
"status": "affected",
"version": "\u003e= 41.0.0-alpha.1, \u003c 41.2.0"
},
{
"status": "affected",
"version": "\u003e= 42.0.0-alpha.1, \u003c 42.0.0-beta.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1, serial-port and media permission checks made from an iframe passed the top-level frame origin to session.setPermissionCheckHandler instead of the requesting iframe origin. Origin-based handler logic could grant a cross-origin iframe device access intended only for the top-level origin. This issue is fixed in 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-346",
"description": "CWE-346: Origin Validation Error",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T15:36:02.182Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/electron/electron/security/advisories/GHSA-9pf5-hg6p-4pwp",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/electron/electron/security/advisories/GHSA-9pf5-hg6p-4pwp"
},
{
"name": "https://github.com/electron/electron/commit/0cbdf2f0375466d701aa393c92e0ec29eb89ea6c",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/electron/electron/commit/0cbdf2f0375466d701aa393c92e0ec29eb89ea6c"
}
],
"source": {
"advisory": "GHSA-9pf5-hg6p-4pwp",
"discovery": "UNKNOWN"
},
"title": "Electron: Permission Check Handler Receives Main Frame Origin Instead of Requesting Iframe Origin"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-70599",
"datePublished": "2026-08-05T15:36:02.182Z",
"dateReserved": "2026-08-04T19:50:27.328Z",
"dateUpdated": "2026-08-05T18:41:57.567Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-69245 (GCVE-0-2026-69245)
Vulnerability from cvelistv5 – Published: 2026-08-03 21:05 – Updated: 2026-08-04 15:04
VLAI
EPSS
VEX
Title
Guzzle: Noncanonical cookie domain keeps subdomain scope
Summary
Guzzle is an extensible PHP HTTP client. Prior to 7.15.2 and 8.0.1, SetCookie::matchesDomain() gives every subdomain of a cookie Domain that cookie unless SetCookie::matchesDomain() recognizes the Domain as an IP literal or a numeric host, and the decision comes from the domain's own text, so two spellings a transport reads as an address keep subdomain scope. Hexadecimal and mixed-base forms such as 0x7f000001 and 0177.0.0.0x1 go unrecognized while libcurl 8.21.0 reads both as 127.0.0.1. A percent-escaped Domain keeps that scope on both branches because percent-decoding sits above numeric parsing, so 192.168.0.%31 and 127.0.0.1%2e are registered names in the URI grammar rather than address literals, and no numeric rule in any base classifies them, while libcurl decodes the host before resolving and reads them as 192.168.0.1 and 127.0.0.1. A cookie stored for Domain=0x7f000001 is placed in the Cookie header of a request to evil.0x7f000001, disclosing a session identifier or token to a host that is not that address, and a response from evil.0x7f000001 setting Domain=0x7f000001 is accepted into the jar and replayed to the address, so a server answering for the look-alike name can fix a session or set application state. Exploitation requires the application to enable cookie support, address an origin by one of these spellings, and contact a host whose name ends in that spelling. This issue is fixed in versions 7.15.2 and 8.0.1.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/guzzle/guzzle/security/advisor… | x_refsource_CONFIRM |
| https://github.com/guzzle/guzzle/pull/3907 | x_refsource_MISC |
| https://github.com/guzzle/guzzle/pull/3908 | x_refsource_MISC |
| https://github.com/guzzle/guzzle/commit/3aeea0406… | x_refsource_MISC |
| https://github.com/guzzle/guzzle/commit/744101956… | x_refsource_MISC |
| https://github.com/guzzle/guzzle/releases/tag/7.15.2 | x_refsource_MISC |
| https://github.com/guzzle/guzzle/releases/tag/8.0.1 | x_refsource_MISC |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-69245",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-04T14:28:29.558697Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-04T15:04:58.047Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "guzzle",
"vendor": "guzzle",
"versions": [
{
"status": "affected",
"version": "\u003c 7.15.2"
},
{
"status": "affected",
"version": "\u003e= 8.0.0, \u003c 8.0.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Guzzle is an extensible PHP HTTP client. Prior to 7.15.2 and 8.0.1, SetCookie::matchesDomain() gives every subdomain of a cookie Domain that cookie unless SetCookie::matchesDomain() recognizes the Domain as an IP literal or a numeric host, and the decision comes from the domain\u0027s own text, so two spellings a transport reads as an address keep subdomain scope. Hexadecimal and mixed-base forms such as 0x7f000001 and 0177.0.0.0x1 go unrecognized while libcurl 8.21.0 reads both as 127.0.0.1. A percent-escaped Domain keeps that scope on both branches because percent-decoding sits above numeric parsing, so 192.168.0.%31 and 127.0.0.1%2e are registered names in the URI grammar rather than address literals, and no numeric rule in any base classifies them, while libcurl decodes the host before resolving and reads them as 192.168.0.1 and 127.0.0.1. A cookie stored for Domain=0x7f000001 is placed in the Cookie header of a request to evil.0x7f000001, disclosing a session identifier or token to a host that is not that address, and a response from evil.0x7f000001 setting Domain=0x7f000001 is accepted into the jar and replayed to the address, so a server answering for the look-alike name can fix a session or set application state. Exploitation requires the application to enable cookie support, address an origin by one of these spellings, and contact a host whose name ends in that spelling. This issue is fixed in versions 7.15.2 and 8.0.1."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-180",
"description": "CWE-180: Incorrect Behavior Order: Validate Before Canonicalize",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-346",
"description": "CWE-346: Origin Validation Error",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-384",
"description": "CWE-384: Session Fixation",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-03T21:05:08.259Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/guzzle/guzzle/security/advisories/GHSA-f7vp-7xgx-4w4r",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/guzzle/guzzle/security/advisories/GHSA-f7vp-7xgx-4w4r"
},
{
"name": "https://github.com/guzzle/guzzle/pull/3907",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/guzzle/guzzle/pull/3907"
},
{
"name": "https://github.com/guzzle/guzzle/pull/3908",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/guzzle/guzzle/pull/3908"
},
{
"name": "https://github.com/guzzle/guzzle/commit/3aeea0406aab88cbbd86531313d7cebf8ae149a4",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/guzzle/guzzle/commit/3aeea0406aab88cbbd86531313d7cebf8ae149a4"
},
{
"name": "https://github.com/guzzle/guzzle/commit/744101956d78b7c1384d0cbf379db13e859167bf",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/guzzle/guzzle/commit/744101956d78b7c1384d0cbf379db13e859167bf"
},
{
"name": "https://github.com/guzzle/guzzle/releases/tag/7.15.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/guzzle/guzzle/releases/tag/7.15.2"
},
{
"name": "https://github.com/guzzle/guzzle/releases/tag/8.0.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/guzzle/guzzle/releases/tag/8.0.1"
}
],
"source": {
"advisory": "GHSA-f7vp-7xgx-4w4r",
"discovery": "UNKNOWN"
},
"title": "Guzzle: Noncanonical cookie domain keeps subdomain scope"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-69245",
"datePublished": "2026-08-03T21:05:08.259Z",
"dateReserved": "2026-08-03T19:54:19.852Z",
"dateUpdated": "2026-08-04T15:04:58.047Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-66732 (GCVE-0-2026-66732)
Vulnerability from cvelistv5 – Published: 2026-08-06 12:53 – Updated: 2026-08-06 18:44 X_Open Source
VLAI
EPSS
VEX
Title
Sonic 3 A.I.R. Missing Source Address Validation in ConnectionManager
Summary
Sonic 3 A.I.R. before commit 2492d18 contains a missing source address validation vulnerability in ConnectionManager where established connections are resolved by a two-byte local connection handle alone without verifying that the datagram source address matches the registered remote address for the connection. An on-path attacker who can observe cleartext UDP traffic can inject arbitrary packets into any established session by forging the two-byte connection identifier, enabling session termination via TerminateConnectionPacket, arbitrary channel message forgery, and forged request responses without requiring IP address spoofing.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Eukaryot/sonic3air/commit/2492… | patch |
| https://www.vulncheck.com/advisories/sonic-3-a-i-… | third-party-advisory |
Impacted products
Date Public
2026-07-29 00:00
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-66732",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-06T18:32:00.532088Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-06T18:44:27.467Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "affected",
"packageURL": "pkg:github/Eukaryot/sonic3air",
"product": "sonic3air",
"repo": "https://github.com/Eukaryot/sonic3air",
"vendor": "Eukaryot",
"versions": [
{
"lessThanOrEqual": "26.03.28.0",
"status": "affected",
"version": "0",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "2492d1882cd2cf1cc1d7415729ce5c4fd686cd4f",
"versionType": "git"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Valentin Lobstein (Chocapikk)"
}
],
"datePublic": "2026-07-29T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Sonic 3 A.I.R. before commit 2492d18 contains a missing source address validation vulnerability in ConnectionManager where established connections are resolved by a two-byte local connection handle alone without verifying that the datagram source address matches the registered remote address for the connection. An on-path attacker who can observe cleartext UDP traffic can inject arbitrary packets into any established session by forging the two-byte connection identifier, enabling session termination via TerminateConnectionPacket, arbitrary channel message forgery, and forged request responses without requiring IP address spoofing."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "HIGH",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.3,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-346",
"description": "Origin Validation Error",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-06T12:53:54.287Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "Patch Commit",
"tags": [
"patch"
],
"url": "https://github.com/Eukaryot/sonic3air/commit/2492d1882cd2cf1cc1d7415729ce5c4fd686cd4f"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/sonic-3-a-i-r-missing-source-address-validation-in-connectionmanager"
}
],
"source": {
"discovery": "UNKNOWN"
},
"tags": [
"x_open-source"
],
"title": "Sonic 3 A.I.R. Missing Source Address Validation in ConnectionManager",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-66732",
"datePublished": "2026-08-06T12:53:54.287Z",
"dateReserved": "2026-07-27T16:27:47.647Z",
"dateUpdated": "2026-08-06T18:44:27.467Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-66420 (GCVE-0-2026-66420)
Vulnerability from cvelistv5 – Published: 2026-07-30 21:52 – Updated: 2026-07-31 15:58
VLAI
EPSS
VEX
Title
MeshCentral Cross-Site WebSocket Hijacking via Origin Validation Bypass on Self-Signed Certificate Deployments
Summary
MeshCentral 1.1.21 contains a cross-site WebSocket hijacking protection bypass vulnerability that allows unauthenticated remote attackers to hijack authenticated administrator sessions by exploiting an unconditional early return in the CheckWebServerOriginName() function within webserver.js when self-signed certificates are in use. Attackers can open cross-origin WebSocket connections to any of the twelve WebSocket endpoints, send crafted action commands to exfiltrate the server sessionKey used to sign session cookies, forge session tokens as arbitrary users, and gain full remote control of all managed devices governed by the MeshCentral instance.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/Ylianst/MeshCentral/pull/7882 | productpatch |
| https://github.com/Ylianst/MeshCentral/commit/f04c9f4 | patch |
| https://github.com/Ylianst/MeshCentral | product |
| https://www.vulncheck.com/advisories/meshcentral-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ylianst | MeshCentral |
Affected:
1.1.21
(custom)
|
Date Public
2026-07-30 00:00
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-66420",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-31T15:54:31.218334Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-31T15:58:57.183Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "affected",
"product": "MeshCentral",
"vendor": "Ylianst",
"versions": [
{
"status": "affected",
"version": "1.1.21",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Ashish Kunwar (@D0rkerDevil)"
}
],
"datePublic": "2026-07-30T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "MeshCentral 1.1.21 contains a cross-site WebSocket hijacking protection bypass vulnerability that allows unauthenticated remote attackers to hijack authenticated administrator sessions by exploiting an unconditional early return in the CheckWebServerOriginName() function within webserver.js when self-signed certificates are in use. Attackers can open cross-origin WebSocket connections to any of the twelve WebSocket endpoints, send crafted action commands to exfiltrate the server sessionKey used to sign session cookies, forge session tokens as arbitrary users, and gain full remote control of all managed devices governed by the MeshCentral instance."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "ACTIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-346",
"description": "Origin Validation Error",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-31T11:54:06.878Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "Pull Request",
"tags": [
"product",
"patch"
],
"url": "https://github.com/Ylianst/MeshCentral/pull/7882"
},
{
"name": "Merge Commit",
"tags": [
"patch"
],
"url": "https://github.com/Ylianst/MeshCentral/commit/f04c9f4"
},
{
"name": "Product Repository",
"tags": [
"product"
],
"url": "https://github.com/Ylianst/MeshCentral"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/meshcentral-cross-site-websocket-hijacking-via-origin-validation-bypass-on-self-signed-certificate-deployments"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "MeshCentral Cross-Site WebSocket Hijacking via Origin Validation Bypass on Self-Signed Certificate Deployments",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-66420",
"datePublished": "2026-07-30T21:52:28.914Z",
"dateReserved": "2026-07-27T05:16:45.792Z",
"dateUpdated": "2026-07-31T15:58:57.183Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-66322 (GCVE-0-2026-66322)
Vulnerability from cvelistv5 – Published: 2026-08-03 22:57 – Updated: 2026-08-07 18:21
VLAI
EPSS
VEX
Title
Microsoft Edge (Chromium-based) Spoofing Vulnerability
Summary
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) |
Affected:
1.0.0.0 , < 151.0.4129.59
(custom)
|
Date Public
2026-07-31 14:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-66322",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-04T14:00:34.497649Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-04T14:00:42.306Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Microsoft Edge (Chromium-based)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "151.0.4129.59",
"status": "affected",
"version": "1.0.0.0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*",
"versionEndExcluding": "151.0.4129.59",
"versionStartIncluding": "1.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2026-07-31T14:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.1,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-346",
"description": "CWE-346: Origin Validation Error",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-07T18:21:59.480Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "Microsoft Edge (Chromium-based) Spoofing Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66322"
}
],
"title": "Microsoft Edge (Chromium-based) Spoofing Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2026-66322",
"datePublished": "2026-08-03T22:57:54.552Z",
"dateReserved": "2026-07-24T18:06:51.296Z",
"dateUpdated": "2026-08-07T18:21:59.480Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-66318 (GCVE-0-2026-66318)
Vulnerability from cvelistv5 – Published: 2026-08-03 22:51 – Updated: 2026-08-07 18:15
VLAI
EPSS
VEX
Title
Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
Summary
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) |
Affected:
1.0.0.0 , < 151.0.4129.59
(custom)
|
Date Public
2026-07-31 14:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-66318",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-04T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T03:57:16.989Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Microsoft Edge (Chromium-based)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "151.0.4129.59",
"status": "affected",
"version": "1.0.0.0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*",
"versionEndExcluding": "151.0.4129.59",
"versionStartIncluding": "1.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2026-07-31T14:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.1,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-346",
"description": "CWE-346: Origin Validation Error",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-07T18:15:50.689Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "Microsoft Edge (Chromium-based) Information Disclosure Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66318"
}
],
"title": "Microsoft Edge (Chromium-based) Information Disclosure Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2026-66318",
"datePublished": "2026-08-03T22:51:43.716Z",
"dateReserved": "2026-07-24T18:06:51.296Z",
"dateUpdated": "2026-08-07T18:15:50.689Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-66317 (GCVE-0-2026-66317)
Vulnerability from cvelistv5 – Published: 2026-08-03 22:57 – Updated: 2026-08-07 18:21
VLAI
EPSS
VEX
Title
Microsoft Edge (Chromium-based) Tampering Vulnerability
Summary
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) |
Affected:
1.0.0.0 , < 151.0.4129.59
(custom)
|
Date Public
2026-07-31 14:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-66317",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-04T14:16:46.570289Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-04T14:17:00.681Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Microsoft Edge (Chromium-based)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "151.0.4129.59",
"status": "affected",
"version": "1.0.0.0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*",
"versionEndExcluding": "151.0.4129.59",
"versionStartIncluding": "1.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2026-07-31T14:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering over a network."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-346",
"description": "CWE-346: Origin Validation Error",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-07T18:21:58.860Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "Microsoft Edge (Chromium-based) Tampering Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66317"
}
],
"title": "Microsoft Edge (Chromium-based) Tampering Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2026-66317",
"datePublished": "2026-08-03T22:57:54.002Z",
"dateReserved": "2026-07-24T18:06:51.295Z",
"dateUpdated": "2026-08-07T18:21:58.860Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-66316 (GCVE-0-2026-66316)
Vulnerability from cvelistv5 – Published: 2026-08-03 22:53 – Updated: 2026-08-07 18:17
VLAI
EPSS
VEX
Title
Microsoft Edge (Chromium-based) Spoofing Vulnerability
Summary
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) |
Affected:
1.0.0.0 , < 151.0.4129.59
(custom)
|
Date Public
2026-07-31 14:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-66316",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-04T14:19:48.455410Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-04T15:04:39.500Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Microsoft Edge (Chromium-based)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "151.0.4129.59",
"status": "affected",
"version": "1.0.0.0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*",
"versionEndExcluding": "151.0.4129.59",
"versionStartIncluding": "1.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2026-07-31T14:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-346",
"description": "CWE-346: Origin Validation Error",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-07T18:17:26.222Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "Microsoft Edge (Chromium-based) Spoofing Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66316"
}
],
"title": "Microsoft Edge (Chromium-based) Spoofing Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2026-66316",
"datePublished": "2026-08-03T22:53:13.132Z",
"dateReserved": "2026-07-24T18:06:51.295Z",
"dateUpdated": "2026-08-07T18:17:26.222Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-66313 (GCVE-0-2026-66313)
Vulnerability from cvelistv5 – Published: 2026-08-03 22:53 – Updated: 2026-08-07 18:17
VLAI
EPSS
VEX
Title
Microsoft Edge (Chromium-based) Tampering Vulnerability
Summary
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) |
Affected:
1.0.0.0 , < 151.0.4129.59
(custom)
|
Date Public
2026-07-31 14:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-66313",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-04T15:30:58.215405Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-04T15:31:21.096Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Microsoft Edge (Chromium-based)",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "151.0.4129.59",
"status": "affected",
"version": "1.0.0.0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*",
"versionEndExcluding": "151.0.4129.59",
"versionStartIncluding": "1.0.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2026-07-31T14:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering locally."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-346",
"description": "CWE-346: Origin Validation Error",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-07T18:17:24.735Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "Microsoft Edge (Chromium-based) Tampering Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66313"
}
],
"title": "Microsoft Edge (Chromium-based) Tampering Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2026-66313",
"datePublished": "2026-08-03T22:53:11.479Z",
"dateReserved": "2026-07-24T18:06:51.295Z",
"dateUpdated": "2026-08-07T18:17:24.735Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-66298 (GCVE-0-2026-66298)
Vulnerability from cvelistv5 – Published: 2026-08-05 19:44 – Updated: 2026-08-06 13:08
VLAI
EPSS
VEX
Title
JS-view sandboxed output can synthesize keyboard events to trigger unconfirmed global shortcuts
Summary
Origin Validation Error vulnerability in livebook-dev livebook allows untrusted notebook output JavaScript to trigger session-wide keyboard shortcuts, including forced evaluation of all cells and runtime restart.
Livebook's JS-view feature renders notebook-defined JavaScript inside a sandboxed, cross-origin iframe specifically because that JavaScript is untrusted. The trusted iframe shell in iframe/priv/static/iframe/v5.html forwards every keydown event fired in its own window to the parent page without consulting Event.isTrusted, so an event synthesized by the untrusted script through window.dispatchEvent is forwarded exactly as a genuine keystroke would be. The parent-side relay in assets/js/hooks/js_view.js reconstructs and re-dispatches it on the live page with no further validation, and because assets/js/hooks/session.js registers the global shortcut handler on the document in the capture phase, that handler acts on the replicated event regardless of how it was produced.
Sandboxed output JavaScript can therefore drive Livebook's session-wide keyboard shortcuts. Two of them reach LivebookWeb.SessionLive and execute immediately with no confirmation: the shortcut for queueing full evaluation runs every cell in the notebook, and the shortcut for reconnecting the runtime disconnects and reconnects it, discarding in-memory state. A third shortcut deletes the focused cell behind a confirmation dialog that the user can permanently dismiss, after which it too executes silently.
Forced full evaluation is the significant consequence, because it causes the notebook's own Elixir code to run without the user choosing to evaluate anything. A user who merely opens a notebook obtained from a third party, or reached from published documentation, can have its code executed on their runtime. Livebook also mirrors cell outputs to every connected client, so a malicious output triggers in a collaborator's browser as soon as it renders.
This issue affects livebook: from 0.5.0 before 0.18.7 and from 0.19.0 before 0.19.9.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
6 references
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| livebook-dev | livebook |
Affected:
0.5.0 , < 0.18.7
(semver)
Affected: 0.19.0 , < 0.19.9 (semver) cpe:2.3:a:livebook-dev:livebook:*:*:*:*:*:*:*:* |
|
| livebook-dev | livebook |
Affected:
0.5.0 , < 0.18.7
(other)
Affected: 0.19.0 , < 0.19.9 (other) Affected: 0.5.0-cuda12 , < 0.18.7-cuda12 (other) Affected: 0.19.0-cuda12 , < 0.19.9-cuda12 (other) cpe:2.3:a:livebook-dev:livebook:*:*:*:*:*:*:*:* |
|
| livebook-dev | livebook |
Affected:
844242ba80a928d0d675416d312a58003cb7771b , < *
(git)
cpe:2.3:a:livebook-dev:livebook:*:*:*:*:*:*:*:* |
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-66298",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-06T13:08:06.869367Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-06T13:08:23.940Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:livebook-dev:livebook:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"Elixir.LivebookWeb.SessionLive"
],
"packageName": "livebook",
"packageURL": "pkg:hex/livebook",
"product": "livebook",
"programFiles": [
"iframe/priv/static/iframe/v5.html",
"assets/js/hooks/js_view.js",
"assets/js/hooks/session.js",
"lib/livebook_web/live/session_live.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.LivebookWeb.SessionLive\u0027:handle_event/3"
}
],
"repo": "https://github.com/livebook-dev/livebook",
"vendor": "livebook-dev",
"versions": [
{
"lessThan": "0.18.7",
"status": "affected",
"version": "0.5.0",
"versionType": "semver"
},
{
"lessThan": "0.19.9",
"status": "affected",
"version": "0.19.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://ghcr.io",
"cpes": [
"cpe:2.3:a:livebook-dev:livebook:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"Elixir.LivebookWeb.SessionLive"
],
"packageName": "livebook-dev/livebook",
"packageURL": "pkg:oci/livebook?repository_url=ghcr.io%2Flivebook-dev",
"product": "livebook",
"programFiles": [
"iframe/priv/static/iframe/v5.html",
"assets/js/hooks/js_view.js",
"assets/js/hooks/session.js",
"lib/livebook_web/live/session_live.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.LivebookWeb.SessionLive\u0027:handle_event/3"
}
],
"vendor": "livebook-dev",
"versions": [
{
"lessThan": "0.18.7",
"status": "affected",
"version": "0.5.0",
"versionType": "other"
},
{
"lessThan": "0.19.9",
"status": "affected",
"version": "0.19.0",
"versionType": "other"
},
{
"lessThan": "0.18.7-cuda12",
"status": "affected",
"version": "0.5.0-cuda12",
"versionType": "other"
},
{
"lessThan": "0.19.9-cuda12",
"status": "affected",
"version": "0.19.0-cuda12",
"versionType": "other"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:livebook-dev:livebook:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"Elixir.LivebookWeb.SessionLive"
],
"packageName": "livebook-dev/livebook",
"packageURL": "pkg:github/livebook-dev/livebook",
"product": "livebook",
"programFiles": [
"iframe/priv/static/iframe/v5.html",
"assets/js/hooks/js_view.js",
"assets/js/hooks/session.js",
"lib/livebook_web/live/session_live.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.LivebookWeb.SessionLive\u0027:handle_event/3"
}
],
"repo": "https://github.com/livebook-dev/livebook",
"vendor": "livebook-dev",
"versions": [
{
"changes": [
{
"at": "296318ffdfa6e5ed7b18ad8d5a5b2af90f3cd728",
"status": "unaffected"
},
{
"at": "a552ce8f99ad348ea37061394dc950a0cebdb33e",
"status": "unaffected"
},
{
"at": "5980e5c6b71036806b3bf54101eb1d6c0f50f19c",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "844242ba80a928d0d675416d312a58003cb7771b",
"versionType": "git"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:livebook-dev:livebook:*:*:*:*:*:*:*:*",
"versionEndExcluding": "0.18.7",
"versionStartIncluding": "0.5.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:livebook-dev:livebook:*:*:*:*:*:*:*:*",
"versionEndExcluding": "0.19.9",
"versionStartIncluding": "0.19.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Nguy\u1ec5n C\u00f4ng T\u00fa"
},
{
"lang": "en",
"type": "analyst",
"value": "Jonatan M\u00e4nnchen / EEF"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Jonatan K\u0142osko"
},
{
"lang": "en",
"type": "remediation reviewer",
"value": "Jos\u00e9 Valim"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eOrigin Validation Error vulnerability in livebook-dev livebook allows untrusted notebook output JavaScript to trigger session-wide keyboard shortcuts, including forced evaluation of all cells and runtime restart.\u003c/p\u003e\n\u003cp\u003eLivebook\u0027s JS-view feature renders notebook-defined JavaScript inside a sandboxed, cross-origin iframe specifically because that JavaScript is untrusted. The trusted iframe shell in \u003ccode\u003eiframe/priv/static/iframe/v5.html\u003c/code\u003e forwards every \u003ccode\u003ekeydown\u003c/code\u003e event fired in its own window to the parent page without consulting \u003ccode\u003eEvent.isTrusted\u003c/code\u003e, so an event synthesized by the untrusted script through \u003ccode\u003ewindow.dispatchEvent\u003c/code\u003e is forwarded exactly as a genuine keystroke would be. The parent-side relay in \u003ccode\u003eassets/js/hooks/js_view.js\u003c/code\u003e reconstructs and re-dispatches it on the live page with no further validation, and because \u003ccode\u003eassets/js/hooks/session.js\u003c/code\u003e registers the global shortcut handler on the document in the capture phase, that handler acts on the replicated event regardless of how it was produced.\u003c/p\u003e\n\u003cp\u003eSandboxed output JavaScript can therefore drive Livebook\u0027s session-wide keyboard shortcuts. Two of them reach \u003ccode\u003eLivebookWeb.SessionLive\u003c/code\u003e and execute immediately with no confirmation: the shortcut for queueing full evaluation runs every cell in the notebook, and the shortcut for reconnecting the runtime disconnects and reconnects it, discarding in-memory state. A third shortcut deletes the focused cell behind a confirmation dialog that the user can permanently dismiss, after which it too executes silently.\u003c/p\u003e\n\u003cp\u003eForced full evaluation is the significant consequence, because it causes the notebook\u0027s own Elixir code to run without the user choosing to evaluate anything. A user who merely opens a notebook obtained from a third party, or reached from published documentation, can have its code executed on their runtime. Livebook also mirrors cell outputs to every connected client, so a malicious output triggers in a collaborator\u0027s browser as soon as it renders.\u003c/p\u003e\n\u003cp\u003eThis issue affects livebook: from 0.5.0 before 0.18.7 and from 0.19.0 before 0.19.9.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "Origin Validation Error vulnerability in livebook-dev livebook allows untrusted notebook output JavaScript to trigger session-wide keyboard shortcuts, including forced evaluation of all cells and runtime restart.\n\nLivebook\u0027s JS-view feature renders notebook-defined JavaScript inside a sandboxed, cross-origin iframe specifically because that JavaScript is untrusted. The trusted iframe shell in `iframe/priv/static/iframe/v5.html` forwards every `keydown` event fired in its own window to the parent page without consulting `Event.isTrusted`, so an event synthesized by the untrusted script through `window.dispatchEvent` is forwarded exactly as a genuine keystroke would be. The parent-side relay in `assets/js/hooks/js_view.js` reconstructs and re-dispatches it on the live page with no further validation, and because `assets/js/hooks/session.js` registers the global shortcut handler on the document in the capture phase, that handler acts on the replicated event regardless of how it was produced.\n\nSandboxed output JavaScript can therefore drive Livebook\u0027s session-wide keyboard shortcuts. Two of them reach `LivebookWeb.SessionLive` and execute immediately with no confirmation: the shortcut for queueing full evaluation runs every cell in the notebook, and the shortcut for reconnecting the runtime disconnects and reconnects it, discarding in-memory state. A third shortcut deletes the focused cell behind a confirmation dialog that the user can permanently dismiss, after which it too executes silently.\n\nForced full evaluation is the significant consequence, because it causes the notebook\u0027s own Elixir code to run without the user choosing to evaluate anything. A user who merely opens a notebook obtained from a third party, or reached from published documentation, can have its code executed on their runtime. Livebook also mirrors cell outputs to every connected client, so a malicious output triggers in a collaborator\u0027s browser as soon as it renders.\n\nThis issue affects livebook: from 0.5.0 before 0.18.7 and from 0.19.0 before 0.19.9."
}
],
"value": "Origin Validation Error vulnerability in livebook-dev livebook allows untrusted notebook output JavaScript to trigger session-wide keyboard shortcuts, including forced evaluation of all cells and runtime restart.\n\nLivebook\u0027s JS-view feature renders notebook-defined JavaScript inside a sandboxed, cross-origin iframe specifically because that JavaScript is untrusted. The trusted iframe shell in iframe/priv/static/iframe/v5.html forwards every keydown event fired in its own window to the parent page without consulting Event.isTrusted, so an event synthesized by the untrusted script through window.dispatchEvent is forwarded exactly as a genuine keystroke would be. The parent-side relay in assets/js/hooks/js_view.js reconstructs and re-dispatches it on the live page with no further validation, and because assets/js/hooks/session.js registers the global shortcut handler on the document in the capture phase, that handler acts on the replicated event regardless of how it was produced.\n\nSandboxed output JavaScript can therefore drive Livebook\u0027s session-wide keyboard shortcuts. Two of them reach LivebookWeb.SessionLive and execute immediately with no confirmation: the shortcut for queueing full evaluation runs every cell in the notebook, and the shortcut for reconnecting the runtime disconnects and reconnects it, discarding in-memory state. A third shortcut deletes the focused cell behind a confirmation dialog that the user can permanently dismiss, after which it too executes silently.\n\nForced full evaluation is the significant consequence, because it causes the notebook\u0027s own Elixir code to run without the user choosing to evaluate anything. A user who merely opens a notebook obtained from a third party, or reached from published documentation, can have its code executed on their runtime. Livebook also mirrors cell outputs to every connected client, so a malicious output triggers in a collaborator\u0027s browser as soon as it renders.\n\nThis issue affects livebook: from 0.5.0 before 0.18.7 and from 0.19.0 before 0.19.9."
}
],
"impacts": [
{
"capecId": "CAPEC-160",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-160 Exploit Script-Based APIs"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "ACTIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-346",
"description": "CWE-346 Origin Validation Error",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T19:44:11.831Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/livebook-dev/livebook/security/advisories/GHSA-68c2-prqg-x62g"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-66298.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-66298"
},
{
"tags": [
"patch"
],
"url": "https://github.com/livebook-dev/livebook/commit/296318ffdfa6e5ed7b18ad8d5a5b2af90f3cd728"
},
{
"tags": [
"patch"
],
"url": "https://github.com/livebook-dev/livebook/commit/a552ce8f99ad348ea37061394dc950a0cebdb33e"
},
{
"tags": [
"patch"
],
"url": "https://github.com/livebook-dev/livebook/commit/5980e5c6b71036806b3bf54101eb1d6c0f50f19c"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "JS-view sandboxed output can synthesize keyboard events to trigger unconfirmed global shortcuts"
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-66298",
"datePublished": "2026-08-05T19:44:11.831Z",
"dateReserved": "2026-07-24T14:10:01.114Z",
"dateUpdated": "2026-08-06T13:08:23.940Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
No mitigation information available for this CWE.
CAPEC-111: JSON Hijacking (aka JavaScript Hijacking)
An attacker targets a system that uses JavaScript Object Notation (JSON) as a transport mechanism between the client and the server (common in Web 2.0 systems using AJAX) to steal possibly confidential information transmitted from the server back to the client inside the JSON object by taking advantage of the loophole in the browser's Same Origin Policy that does not prohibit JavaScript from one website to be included and executed in the context of another website.
CAPEC-141: Cache Poisoning
An attacker exploits the functionality of cache technologies to cause specific data to be cached that aids the attackers' objectives. This describes any attack whereby an attacker places incorrect or harmful material in cache. The targeted cache can be an application's cache (e.g. a web browser cache) or a public cache (e.g. a DNS or ARP cache). Until the cache is refreshed, most applications or clients will treat the corrupted cache value as valid. This can lead to a wide range of exploits including redirecting web browsers towards sites that install malware and repeatedly incorrect calculations based on the incorrect value.
CAPEC-142: DNS Cache Poisoning
A domain name server translates a domain name (such as www.example.com) into an IP address that Internet hosts use to contact Internet resources. An adversary modifies a public DNS cache to cause certain names to resolve to incorrect addresses that the adversary specifies. The result is that client applications that rely upon the targeted cache for domain name resolution will be directed not to the actual address of the specified domain name but to some other address. Adversaries can use this to herd clients to sites that install malware on the victim's computer or to masquerade as part of a Pharming attack.
CAPEC-160: Exploit Script-Based APIs
Some APIs support scripting instructions as arguments. Methods that take scripted instructions (or references to scripted instructions) can be very flexible and powerful. However, if an attacker can specify the script that serves as input to these methods they can gain access to a great deal of functionality. For example, HTML pages support <script> tags that allow scripting languages to be embedded in the page and then interpreted by the receiving web browser. If the content provider is malicious, these scripts can compromise the client application. Some applications may even execute the scripts under their own identity (rather than the identity of the user providing the script) which can allow attackers to perform activities that would otherwise be denied to them.
CAPEC-21: Exploitation of Trusted Identifiers
An adversary guesses, obtains, or "rides" a trusted identifier (e.g. session ID, resource ID, cookie, etc.) to perform authorized actions under the guise of an authenticated user or service.
CAPEC-384: Application API Message Manipulation via Man-in-the-Middle
An attacker manipulates either egress or ingress data from a client within an application framework in order to change the content of messages. Performing this attack can allow the attacker to gain unauthorized privileges within the application, or conduct attacks such as phishing, deceptive strategies to spread malware, or traditional web-application attacks. The techniques require use of specialized software that allow the attacker to perform adversary-in-the-middle (CAPEC-94) communications between the web browser and the remote system. Despite the use of AiTH software, the attack is actually directed at the server, as the client is one node in a series of content brokers that pass information along to the application framework. Additionally, it is not true "Adversary-in-the-Middle" attack at the network layer, but an application-layer attack the root cause of which is the master applications trust in the integrity of code supplied by the client.
CAPEC-385: Transaction or Event Tampering via Application API Manipulation
An attacker hosts or joins an event or transaction within an application framework in order to change the content of messages or items that are being exchanged. Performing this attack allows the attacker to manipulate content in such a way as to produce messages or content that look authentic but may contain deceptive links, substitute one item or another, spoof an existing item and conduct a false exchange, or otherwise change the amounts or identity of what is being exchanged. The techniques require use of specialized software that allow the attacker to man-in-the-middle communications between the web browser and the remote system in order to change the content of various application elements. Often, items exchanged in game can be monetized via sales for coin, virtual dollars, etc. The purpose of the attack is for the attack to scam the victim by trapping the data packets involved the exchange and altering the integrity of the transfer process.
CAPEC-386: Application API Navigation Remapping
An attacker manipulates either egress or ingress data from a client within an application framework in order to change the destination and/or content of links/buttons displayed to a user within API messages. Performing this attack allows the attacker to manipulate content in such a way as to produce messages or content that looks authentic but contains links/buttons that point to an attacker controlled destination. Some applications make navigation remapping more difficult to detect because the actual HREF values of images, profile elements, and links/buttons are masked. One example would be to place an image in a user's photo gallery that when clicked upon redirected the user to an off-site location. Also, traditional web vulnerabilities (such as CSRF) can be constructed with remapped buttons or links. In some cases navigation remapping can be used for Phishing attacks or even means to artificially boost the page view, user site reputation, or click-fraud.
CAPEC-387: Navigation Remapping To Propagate Malicious Content
An adversary manipulates either egress or ingress data from a client within an application framework in order to change the content of messages and thereby circumvent the expected application logic.
CAPEC-388: Application API Button Hijacking
An attacker manipulates either egress or ingress data from a client within an application framework in order to change the destination and/or content of buttons displayed to a user within API messages. Performing this attack allows the attacker to manipulate content in such a way as to produce messages or content that looks authentic but contains buttons that point to an attacker controlled destination.
CAPEC-510: SaaS User Request Forgery
An adversary, through a previously installed malicious application, performs malicious actions against a third-party Software as a Service (SaaS) application (also known as a cloud based application) by leveraging the persistent and implicit trust placed on a trusted user's session. This attack is executed after a trusted user is authenticated into a cloud service, "piggy-backing" on the authenticated session, and exploiting the fact that the cloud service believes it is only interacting with the trusted user. If successful, the actions embedded in the malicious application will be processed and accepted by the targeted SaaS application and executed at the trusted user's privilege level.
CAPEC-59: Session Credential Falsification through Prediction
This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.
CAPEC-60: Reusing Session IDs (aka Session Replay)
This attack targets the reuse of valid session ID to spoof the target system in order to gain privileges. The attacker tries to reuse a stolen session ID used previously during a transaction to perform spoofing and session hijacking. Another name for this type of attack is Session Replay.
CAPEC-75: Manipulating Writeable Configuration Files
Generally these are manually edited files that are not in the preview of the system administrators, any ability on the attackers' behalf to modify these files, for example in a CVS repository, gives unauthorized access directly to the application, the same as authorized users.
CAPEC-76: Manipulating Web Input to File System Calls
An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.
CAPEC-89: Pharming
A pharming attack occurs when the victim is fooled into entering sensitive data into supposedly trusted locations, such as an online bank site or a trading platform. An attacker can impersonate these supposedly trusted sites and have the victim be directed to their site rather than the originally intended one. Pharming does not require script injection or clicking on malicious links for the attack to succeed.