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CWE-942
Permissive Cross-domain Security Policy with Untrusted Domains
The product uses a web-client protection mechanism such as a Content Security Policy (CSP) or cross-domain policy file, but the policy includes untrusted domains with which the web client is allowed to communicate.
CVE-2026-46431 (GCVE-0-2026-46431)
Vulnerability from cvelistv5 – Published: 2026-05-26 16:42 – Updated: 2026-05-26 17:39
VLAI
Title
Algernon: Auto-refresh SSE event server sets Access-Control-Allow-Origin: *
Summary
Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, the SSE event server's Access-Control-Allow-Origin response header was hardcoded to the wildcard * regardless of the caller's Origin. Because EventSource does not preflight and does not send cookies, the wildcard is sufficient to let any third-party page the developer visits open a cross-origin EventSource to the SSE port and read the live filename stream from JavaScript. This vulnerability is fixed in 1.17.7.
Severity
4.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/xyproto/algernon/security/advi… | x_refsource_CONFIRM |
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CVE-2026-46608 (GCVE-0-2026-46608)
Vulnerability from cvelistv5 – Published: 2026-06-25 18:05 – Updated: 2026-06-26 18:42
VLAI
Title
Glances: XML-RPC Multi-Origin CORS Configuration Silently Falls Back to Wildcard (Incomplete Fix for CVE-2026-33533)
Summary
Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.5, the Glances XML-RPC server (glances -s) introduced a configurable CORS origin list in version 4.5.3 as a mitigation for CVE-2026-33533. However, the implementation silently falls back to Access-Control-Allow-Origin: * whenever cors_origins contains more than one entry. An operator who configures an explicit two-entry allowlist (e.g. two internal dashboard origins) intending to restrict browser access instead receives the unrestricted wildcard. A malicious web page served from any origin can issue a CORS simple request to /RPC2 and read the full system monitoring dataset without the victim's knowledge. This vulnerability is fixed in 4.5.5.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/nicolargo/glances/security/adv… | x_refsource_CONFIRM |
| https://github.com/nicolargo/glances/releases/tag… | x_refsource_MISC |
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CVE-2026-46685 (GCVE-0-2026-46685)
Vulnerability from cvelistv5 – Published: 2026-05-28 18:41 – Updated: 2026-05-28 19:22
VLAI
Title
RustFS: Reflective CORS with credentials on S3 listener; unauthenticated license metadata endpoint on console
Summary
RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.2, when RUSTFS_CORS_ALLOWED_ORIGINS is unset, the RustFS S3 listener's ConditionalCorsLayer reflects any request Origin value back as Access-Control-Allow-Origin and also sets Access-Control-Allow-Credentials: true and Access-Control-Allow-Headers: * on responses, including preflight responses and error responses. This creates a permissive cross-domain policy with untrusted origins. A browser visiting an attacker-controlled page can issue credentialed cross-origin requests to a reachable RustFS deployment and read the response when the victim browser has ambient credentials for the RustFS origin, such as saved HTTP Basic Auth credentials, reverse-proxy SSO cookies, or TLS client certificates. This vulnerability is fixed in 1.0.0-beta.2.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
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CVE-2026-50087 (GCVE-0-2026-50087)
Vulnerability from cvelistv5 – Published: 2026-06-12 15:01 – Updated: 2026-06-12 15:52
VLAI
Title
Aqara IAM/SSO Gateway cross-origin resource sharing
Summary
The Aqara IAM/SSO gateway (gw-builder.aqara.com) exhibits a cross-origin request sharing vulnerability, which is an instance of "CWE-942: Permissive Cross-domain Policy with Untrusted Domains," and has an estimated CVSS of CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N (8.2 High).
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-942 - Permissive cross-domain security policy with untrusted domains
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/xn0tsa/theres-no-place-like-home | technical-description |
| https://www.runzero.com/advisories/aqara-iam-sso-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Aqara | Aqara IAM/SSO Gateway |
Affected:
2026-04-20 , < 0
(date)
|
Date Public
2026-06-12 15:00
Credits
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CVE-2026-50088 (GCVE-0-2026-50088)
Vulnerability from cvelistv5 – Published: 2026-06-12 15:01 – Updated: 2026-06-12 15:51
VLAI
Title
Aqara Developer Portal cross-origin resource sharing
Summary
The Aqara Developer Portal (developer.aqara.com) and shared test environments (developer-test.aqara.com, aiot-test.aqara.com) exhibit cross-origin request sharing, which is an instance of "CWE-942: Permissive Cross-domain Policy with Untrusted Domains," and has an estimated CVSS of CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N (8.2 High).
Severity
8.2 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-942 - Permissive cross-domain security policy with untrusted domains
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/xn0tsa/theres-no-place-like-home | technical-description |
| https://www.runzero.com/advisories/aqara-dev-port… | third-party-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Aqara | Aqara Developer Portal |
Affected:
2026-04-20 , < 0
(date)
|
|
| Aqara | Aqara Developer Test Portal |
Affected:
2026-04-20 , < 0
(date)
|
Date Public
2026-06-12 15:00
Credits
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CVE-2026-5302 (GCVE-0-2026-5302)
Vulnerability from cvelistv5 – Published: 2026-04-08 12:05 – Updated: 2026-04-08 14:10
VLAI
Title
Permissive Cross-domain Policy with Untrusted Domains in coolercontrold
Summary
CORS misconfiguration in CoolerControl/coolercontrold <4.0.0 allows unauthenticated remote attackers to read data and send commands to the service via malicious websites
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| CoolerControl | coolercontrold |
Affected:
2.0.0 , < 4.0.0
(semver)
|
Credits
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CVE-2026-5321 (GCVE-0-2026-5321)
Vulnerability from cvelistv5 – Published: 2026-04-02 04:45 – Updated: 2026-04-02 18:30
VLAI
Title
vanna-ai vanna FastAPI/Flask Server cross-domain policy
Summary
A flaw has been found in vanna-ai vanna up to 2.0.2. Affected by this issue is some unknown functionality of the component FastAPI/Flask Server. Executing a manipulation can lead to permissive cross-domain policy with untrusted domains. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/354653 | vdb-entry |
| https://vuldb.com/vuln/354653/cti | signaturepermissions-required |
| https://vuldb.com/submit/780729 | third-party-advisory |
| https://github.com/August829/CVEP/issues/14 | exploitissue-tracking |
Impacted products
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CVE-2026-54290 (GCVE-0-2026-54290)
Vulnerability from cvelistv5 – Published: 2026-06-22 17:15 – Updated: 2026-06-22 17:26
VLAI
Title
Hono: CORS Middleware reflects any Origin with credentials when `origin` defaults to the wildcard
Summary
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, with credentials: true and no explicit origin (the default wildcard), the CORS Middleware reflects the request's Origin and sends Access-Control-Allow-Credentials: true. Any site can then make credentialed cross-origin requests and read the responses, exposing cookie-authenticated endpoints to arbitrary origins. This vulnerability is fixed in 4.12.25.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/honojs/hono/security/advisorie… | x_refsource_CONFIRM |
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CVE-2026-54753 (GCVE-0-2026-54753)
Vulnerability from cvelistv5 – Published: 2026-06-26 18:13 – Updated: 2026-06-26 19:09
VLAI
Title
Nx: `nx graph` dev server permissive CORS policy
Summary
Nx is a monorepo solution for TypeScript and polyglot codebases. From 17.0.4 until 22.7.2 and 23.0.0-beta.2, the local HTTP server started by nx graph sent Access-Control-Allow-Origin: * on every response, letting any website a developer visited read the server's responses cross-origin — including the full project graph and the output of the /help endpoint, which runs a target's configured help command. The practical impact is typically cross-origin information disclosure, but can be arbitrary command injection in rare cases. This vulnerability is fixed in 22.7.2 and 23.0.0-beta.2.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/nrwl/nx/security/advisories/GH… | x_refsource_CONFIRM |
| https://github.com/nrwl/nx/pull/35494 | x_refsource_MISC |
Impacted products
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CVE-2026-55110 (GCVE-0-2026-55110)
Vulnerability from cvelistv5 – Published: 2026-07-02 14:49 – Updated: 2026-07-02 15:52
VLAI
Summary
A malicious actor who lures an authenticated user to a malicious page could exploit a Cross-Origin Resource Sharing (CORS) misconfiguration found in UniFi OS to trigger actions in UniFi OS using that user's session.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
References
1 reference
Impacted products
12 products
| Vendor | Product | Version | |
|---|---|---|---|
| Ubiquiti Inc | UniFi OS Server |
Affected:
0 , < 5.1.19
(semver)
|
|
| Ubiquiti Inc | Dream Machines |
Affected:
0 , < 5.1.19
(semver)
|
|
| Ubiquiti Inc | Enterprise Fortress Gateway |
Affected:
0 , < 5.1.19
(semver)
|
|
| Ubiquiti Inc | Dream Wall |
Affected:
0 , < 5.1.19
(semver)
|
|
| Ubiquiti Inc | Dream Routers |
Affected:
0 , < 5.1.19
(semver)
|
|
| Ubiquiti Inc | Express 7 |
Affected:
0 , < 5.1.19
(semver)
|
|
| Ubiquiti Inc | Cloud Keys |
Affected:
0 , < 5.1.19
(semver)
|
|
| Ubiquiti Inc | Network Video Recorders |
Affected:
0 , < 5.1.19
(semver)
|
|
| Ubiquiti Inc | Enterprise Video Recorders |
Affected:
0 , < 5.1.19
(semver)
|
|
| Ubiquiti Inc | Cloud Gateways |
Affected:
0 , < 5.1.19
(semver)
|
|
| Ubiquiti Inc | Network Attached Storage |
Affected:
0 , < 5.1.19
(semver)
|
|
| Ubiquiti Inc | Enterprise Firewall Core |
Affected:
0 , < 5.1.19
(semver)
|
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"cna": {
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"product": "UniFi OS Server",
"vendor": "Ubiquiti Inc",
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},
{
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"product": "Express 7",
"vendor": "Ubiquiti Inc",
"versions": [
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"vendor": "Ubiquiti Inc",
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"version": "0",
"versionType": "semver"
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Mitigation
Phases: Architecture and Design, Operation
Strategy: Attack Surface Reduction
Description:
- Define a restrictive Content Security Policy [REF-1486] or cross-domain policy file.
Mitigation
Phases: Architecture and Design, Operation
Strategy: Attack Surface Reduction
Description:
- Avoid using wildcards in the CSP / cross-domain policy file. Any domain matching the wildcard expression will be implicitly trusted, and can perform two-way interaction with the target server.
Mitigation
Phases: Architecture and Design, Operation
Strategy: Environment Hardening
Description:
- For Flash, modify crossdomain.xml to use meta-policy options such as 'master-only' or 'none' to reduce the possibility of an attacker planting extraneous cross-domain policy files on a server.
No CAPEC attack patterns related to this CWE.