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Vulnerability from cleanstart
Published
2026-07-30 07:10
Modified
2026-07-30 09:39
Summary
Security fixes in grafana-alloy 1.15.1-r1
Details
Package grafana-alloy version 1.15.1-r1 fixes 8 vulnerabilities: ghsa-497x-rrr9-68jp, ghsa-w8rr-5gcm-pp58, ghsa-xmrv-pmrh-hhx2, ghsa-3xc5-wrhm-f963, CVE-2026-34040...
References
| URL | Type | |
|---|---|---|
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"CVE-2026-34040",
"CVE-2026-33997",
"CVE-2026-21726",
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]
}
CVE-2026-21726 (GCVE-0-2026-21726)
Vulnerability from cvelistv5 – Published: 2026-04-15 19:24 – Updated: 2026-07-29 14:00
VLAI
EPSS
VEX
Title
Loki Path Traversal - CVE-2021-36156 Bypass
Summary
The CVE-2021-36156 fix validates the namespace parameter for path traversal sequences after a single URL decode, by double encoding, an attacker can read files at the Ruler API endpoint /loki/api/v1/rules/{namespace}
Thanks to Prasanth Sundararajan for reporting this vulnerability.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://grafana.com/security/security-advisories/… | vendor-advisory |
Date Public
2026-04-15 19:20
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CVE-2026-33997 (GCVE-0-2026-33997)
Vulnerability from cvelistv5 – Published: 2026-03-31 01:36 – Updated: 2026-08-03 12:05
VLAI
EPSS
VEX
Title
Moby: Off-by-one error in plugin privilege validation
Summary
Moby is an open source container framework. Prior to version 29.3.1, a security vulnerability has been detected that allows plugins privilege validation to be bypassed during docker plugin install. Due to an error in the daemon's privilege comparison logic, the daemon may incorrectly accept a privilege set that differs from the one approved by the user. Plugins that request exactly one privilege are also affected, because no comparison is performed at all. This issue has been patched in version 29.3.1.
Severity
6.8 (Medium)
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/moby/moby/security/advisories/… | x_refsource_CONFIRM |
| https://github.com/moby/moby/releases/tag/docker-… | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2026-33997 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2453277 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:21769 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22347 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:23345 | vendor-advisoryx_refsource_REDHAT |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| moby | moby |
Affected:
< 29.3.1
|
|
| Red Hat | Multicluster Global Hub 1.5.4 |
Unaffected:
1778867753 , < *
(rpm)
cpe:/a:redhat:multicluster_globalhub:1.5::el9 |
|
| Red Hat | Red Hat multicluster global hub 1.4.4 |
Unaffected:
1779579439 , < *
(rpm)
cpe:/a:redhat:multicluster_globalhub:1.4::el9 |
|
| Red Hat | Red Hat multicluster global hub 1.6.0 |
Unaffected:
1780167118 , < *
(rpm)
cpe:/a:redhat:multicluster_globalhub:1.6::el9 |
|
| Red Hat | Multicluster Engine for Kubernetes |
cpe:/a:redhat:multicluster_engine |
|
| Red Hat | OpenShift Service Mesh 2 |
cpe:/a:redhat:service_mesh:2 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2 |
cpe:/a:redhat:acm:2 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
|
| Red Hat | Red Hat OpenShift Virtualization 4 |
cpe:/a:redhat:container_native_virtualization:4 |
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CVE-2026-34040 (GCVE-0-2026-34040)
Vulnerability from cvelistv5 – Published: 2026-03-31 01:36 – Updated: 2026-04-02 03:55
VLAI
EPSS
VEX
Title
Moby: AuthZ plugin bypass with oversized request body
Summary
Moby is an open source container framework. Prior to version 29.3.1, a security vulnerability has been detected that allows attackers to bypass authorization plugins (AuthZ). This issue has been patched in version 29.3.1.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-288 - Authentication Bypass Using an Alternate Path or Channel
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/moby/moby/security/advisories/… | x_refsource_CONFIRM |
| https://github.com/moby/moby/releases/tag/docker-… | x_refsource_MISC |
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"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-31T01:36:48.205Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/moby/moby/security/advisories/GHSA-x744-4wpc-v9h2",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/moby/moby/security/advisories/GHSA-x744-4wpc-v9h2"
},
{
"name": "https://github.com/moby/moby/releases/tag/docker-v29.3.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/moby/moby/releases/tag/docker-v29.3.1"
}
],
"source": {
"advisory": "GHSA-x744-4wpc-v9h2",
"discovery": "UNKNOWN"
},
"title": "Moby: AuthZ plugin bypass with oversized request body"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-34040",
"datePublished": "2026-03-31T01:36:48.205Z",
"dateReserved": "2026-03-25T15:29:04.744Z",
"dateUpdated": "2026-04-02T03:55:56.676Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-39882 (GCVE-0-2026-39882)
Vulnerability from cvelistv5 – Published: 2026-04-08 20:24 – Updated: 2026-04-09 20:22
VLAI
EPSS
VEX
Title
OpenTelemetry-Go OTLP HTTP exporters read unbounded HTTP response bodies
Summary
OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to 1.43.0, the otlp HTTP exporters (traces/metrics/logs) read the full HTTP response body into an in-memory bytes.Buffer without a size cap. This is exploitable for memory exhaustion when the configured collector endpoint is attacker-controlled (or a network attacker can mitm the exporter connection). This vulnerability is fixed in 1.43.0.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/open-telemetry/opentelemetry-g… | x_refsource_CONFIRM |
| https://github.com/open-telemetry/opentelemetry-g… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-telemetry | opentelemetry-go |
Affected:
< 1.43.0
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-39882",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-09T20:21:49.122499Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-09T20:22:03.109Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "opentelemetry-go",
"vendor": "open-telemetry",
"versions": [
{
"status": "affected",
"version": "\u003c 1.43.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to 1.43.0, the otlp HTTP exporters (traces/metrics/logs) read the full HTTP response body into an in-memory bytes.Buffer without a size cap. This is exploitable for memory exhaustion when the configured collector endpoint is attacker-controlled (or a network attacker can mitm the exporter connection). This vulnerability is fixed in 1.43.0."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-789",
"description": "CWE-789: Memory Allocation with Excessive Size Value",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-08T20:24:19.246Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58"
},
{
"name": "https://github.com/open-telemetry/opentelemetry-go/pull/8108",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/open-telemetry/opentelemetry-go/pull/8108"
}
],
"source": {
"advisory": "GHSA-w8rr-5gcm-pp58",
"discovery": "UNKNOWN"
},
"title": "OpenTelemetry-Go OTLP HTTP exporters read unbounded HTTP response bodies"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-39882",
"datePublished": "2026-04-08T20:24:19.246Z",
"dateReserved": "2026-04-07T20:32:03.010Z",
"dateUpdated": "2026-04-09T20:22:03.109Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
GHSA-3XC5-WRHM-F963
Vulnerability from github – Published: 2026-04-17 22:31 – Updated: 2026-05-12 13:32
VLAI
Summary
go-git: Credential leak via cross-host redirect in smart HTTP transport
Details
Impact
go-git may leak HTTP authentication credentials when following redirects during smart-HTTP clone and fetch operations.
If a remote repository responds to the initial /info/refs request with a redirect to a different host, go-git updates the session endpoint to the redirected location and reuses the original authentication for subsequent requests. This can result in the credentials (e.g. Authorization headers) being sent to an unintended host.
An attacker controlling or influencing the redirect target can capture these credentials and potentially reuse them to access the victim’s repositories or other resources, depending on the scope of the credential.
Clients using go-git exclusively with trusted remotes (for example, GitHub or GitLab), and over a secure HTTPS connection, are not affected by this issue. The risk arises when interacting with untrusted or misconfigured Git servers, or when using unsecured HTTP connections, which is not recommended. Such configurations also expose clients to a broader class of security risks beyond this issue, including credential interception and tampering of repository data.
Patches
Users should upgrade to v5.18.0, or v6.0.0-alpha.2, in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported go-git version.
The patched versions add support for configuring followRedirects. In line with upstream behaviour, the default is now initial, while users can opt into FollowRedirects or NoFollowRedirects programmatically.
Credit
Thanks to the 3 separate reports from @celinke97, @N0zoM1z0 and @AyushParkara. Thanks for finding and reporting this issue privately to the go-git project. :bow:
Severity
4.7 (Medium)
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 5.17.2"
},
"package": {
"ecosystem": "Go",
"name": "github.com/go-git/go-git/v5"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.18.0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 6.0.0-alpha.1"
},
"package": {
"ecosystem": "Go",
"name": "github.com/go-git/go-git/v6"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "6.0.0-alpha.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-41506"
],
"database_specific": {
"cwe_ids": [
"CWE-522"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-17T22:31:35Z",
"nvd_published_at": "2026-05-08T14:16:33Z",
"severity": "MODERATE"
},
"details": "### Impact\n`go-git` may leak HTTP authentication credentials when following redirects during smart-HTTP clone and fetch operations.\n\nIf a remote repository responds to the initial `/info/refs` request with a redirect to a different host, go-git updates the session endpoint to the redirected location and reuses the original authentication for subsequent requests. This can result in the credentials (e.g. Authorization headers) being sent to an unintended host.\n\nAn attacker controlling or influencing the redirect target can capture these credentials and potentially reuse them to access the victim\u2019s repositories or other resources, depending on the scope of the credential.\n\n**Clients using `go-git` exclusively with trusted remotes (for example, GitHub or GitLab), and over a secure HTTPS connection, are not affected by this issue.** The risk arises when interacting with untrusted or misconfigured Git servers, or when using unsecured HTTP connections, which is not recommended. Such configurations also expose clients to a broader class of security risks beyond this issue, including credential interception and tampering of repository data.\n\n### Patches\nUsers should upgrade to `v5.18.0`, or `v6.0.0-alpha.2`, in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported `go-git` version.\n\nThe patched versions add support for configuring [followRedirects](https://git-scm.com/docs/git-config#Documentation/git-config.txt-httpfollowRedirects). In line with upstream behaviour, the default is now `initial`, while users can opt into `FollowRedirects` or `NoFollowRedirects` programmatically.\n\n### Credit\nThanks to the 3 separate reports from @celinke97, @N0zoM1z0 and @AyushParkara. Thanks for finding and reporting this issue privately to the `go-git` project. :bow:",
"id": "GHSA-3xc5-wrhm-f963",
"modified": "2026-05-12T13:32:21Z",
"published": "2026-04-17T22:31:35Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/go-git/go-git/security/advisories/GHSA-3xc5-wrhm-f963"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41506"
},
{
"type": "PACKAGE",
"url": "https://github.com/go-git/go-git"
},
{
"type": "WEB",
"url": "https://github.com/go-git/go-git/releases/tag/v5.18.0"
},
{
"type": "WEB",
"url": "https://github.com/go-git/go-git/releases/tag/v6.0.0-alpha.2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "go-git: Credential leak via cross-host redirect in smart HTTP transport"
}
GHSA-497X-RRR9-68JP
Vulnerability from github – Published: 2026-04-15 21:30 – Updated: 2026-04-16 21:42
VLAI
Summary
Grafana Loki Path Traversal - CVE-2021-36156 Bypass
Details
The CVE-2021-36156 fix validates the namespace parameter for path traversal sequences after a single URL decode, by double encoding, an attacker can read files at the Ruler API endpoint /loki/api/v1/rules/{namespace}
Thanks to Prasanth Sundararajan for reporting this vulnerability.
Severity
5.3 (Medium)
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/grafana/loki/v3"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-21726"
],
"database_specific": {
"cwe_ids": [
"CWE-22",
"CWE-601"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-16T21:42:00Z",
"nvd_published_at": "2026-04-15T20:16:34Z",
"severity": "MODERATE"
},
"details": "The CVE-2021-36156 fix validates the namespace parameter for path traversal sequences after a single URL decode, by double encoding, an attacker can read files at the Ruler API endpoint /loki/api/v1/rules/{namespace}\n\nThanks to Prasanth Sundararajan for reporting this vulnerability.",
"id": "GHSA-497x-rrr9-68jp",
"modified": "2026-04-16T21:42:00Z",
"published": "2026-04-15T21:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21726"
},
{
"type": "PACKAGE",
"url": "https://github.com/grafana/loki"
},
{
"type": "WEB",
"url": "https://grafana.com/security/security-advisories/cve-2026-21726"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Grafana Loki Path Traversal - CVE-2021-36156 Bypass"
}
GHSA-W8RR-5GCM-PP58
Vulnerability from github – Published: 2026-04-08 19:22 – Updated: 2026-04-09 14:29
VLAI
Summary
opentelemetry-go: OTLP HTTP exporters read unbounded HTTP response bodies
Details
overview:
this report shows that the otlp HTTP exporters (traces/metrics/logs) read the full HTTP response body into an in-memory bytes.Buffer without a size cap.
this is exploitable for memory exhaustion when the configured collector endpoint is attacker-controlled (or a network attacker can mitm the exporter connection).
severity
HIGH
not claiming: this is a remote dos against every default deployment. claiming: if the exporter sends traces to an untrusted collector endpoint (or over a network segment where mitm is realistic), that endpoint can crash the process via a large response body.
callsite (pinned): - exporters/otlp/otlptrace/otlptracehttp/client.go:199 - exporters/otlp/otlptrace/otlptracehttp/client.go:230 - exporters/otlp/otlpmetric/otlpmetrichttp/client.go:170 - exporters/otlp/otlpmetric/otlpmetrichttp/client.go:201 - exporters/otlp/otlplog/otlploghttp/client.go:190 - exporters/otlp/otlplog/otlploghttp/client.go:221
permalinks (pinned): - https://github.com/open-telemetry/opentelemetry-go/blob/248da958375e4dfb4a1105645107be3ef04b1c59/exporters/otlp/otlptrace/otlptracehttp/client.go#L199 - https://github.com/open-telemetry/opentelemetry-go/blob/248da958375e4dfb4a1105645107be3ef04b1c59/exporters/otlp/otlptrace/otlptracehttp/client.go#L230 - https://github.com/open-telemetry/opentelemetry-go/blob/248da958375e4dfb4a1105645107be3ef04b1c59/exporters/otlp/otlpmetric/otlpmetrichttp/client.go#L170 - https://github.com/open-telemetry/opentelemetry-go/blob/248da958375e4dfb4a1105645107be3ef04b1c59/exporters/otlp/otlpmetric/otlpmetrichttp/client.go#L201 - https://github.com/open-telemetry/opentelemetry-go/blob/248da958375e4dfb4a1105645107be3ef04b1c59/exporters/otlp/otlplog/otlploghttp/client.go#L190 - https://github.com/open-telemetry/opentelemetry-go/blob/248da958375e4dfb4a1105645107be3ef04b1c59/exporters/otlp/otlplog/otlploghttp/client.go#L221
root cause:
each exporter client reads resp.Body using io.Copy(&respData, resp.Body) into a bytes.Buffer on both success and error paths, with no upper bound.
impact: a malicious collector can force large transient heap allocations during export (peak memory scales with attacker-chosen response size) and can potentially crash the instrumented process (oom).
affected component: - go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp - go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp - go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp
repro (local-only):
unzip poc.zip -d poc
cd poc
make canonical resp_bytes=33554432 chunk_delay_ms=0
expected output contains:
[CALLSITE_HIT]: otlptracehttp.UploadTraces::io.Copy(resp.Body)
[PROOF_MARKER]: resp_bytes=33554432 peak_alloc_bytes=118050512
control (same env, patched target):
unzip poc.zip -d poc
cd poc
make control resp_bytes=33554432 chunk_delay_ms=0
expected control output contains:
[CALLSITE_HIT]: otlptracehttp.UploadTraces::io.Copy(resp.Body)
[NC_MARKER]: resp_bytes=33554432 peak_alloc_bytes=512232
attachments: poc.zip (attached)
Fixed in: https://github.com/open-telemetry/opentelemetry-go/pull/8108
Severity
5.3 (Medium)
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.43.0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.43.0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.19.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-39882"
],
"database_specific": {
"cwe_ids": [
"CWE-789"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-08T19:22:01Z",
"nvd_published_at": "2026-04-08T21:17:00Z",
"severity": "MODERATE"
},
"details": "overview:\nthis report shows that the otlp HTTP exporters (traces/metrics/logs) read the full HTTP response body into an in-memory `bytes.Buffer` without a size cap.\n\nthis is exploitable for memory exhaustion when the configured collector endpoint is attacker-controlled (or a network attacker can mitm the exporter connection).\n\nseverity\n\nHIGH\n\nnot claiming: this is a remote dos against every default deployment.\nclaiming: if the exporter sends traces to an untrusted collector endpoint (or over a network segment where mitm is realistic), that endpoint can crash the process via a large response body.\n\ncallsite (pinned):\n- exporters/otlp/otlptrace/otlptracehttp/client.go:199\n- exporters/otlp/otlptrace/otlptracehttp/client.go:230\n- exporters/otlp/otlpmetric/otlpmetrichttp/client.go:170\n- exporters/otlp/otlpmetric/otlpmetrichttp/client.go:201\n- exporters/otlp/otlplog/otlploghttp/client.go:190\n- exporters/otlp/otlplog/otlploghttp/client.go:221\n\npermalinks (pinned):\n- https://github.com/open-telemetry/opentelemetry-go/blob/248da958375e4dfb4a1105645107be3ef04b1c59/exporters/otlp/otlptrace/otlptracehttp/client.go#L199\n- https://github.com/open-telemetry/opentelemetry-go/blob/248da958375e4dfb4a1105645107be3ef04b1c59/exporters/otlp/otlptrace/otlptracehttp/client.go#L230\n- https://github.com/open-telemetry/opentelemetry-go/blob/248da958375e4dfb4a1105645107be3ef04b1c59/exporters/otlp/otlpmetric/otlpmetrichttp/client.go#L170\n- https://github.com/open-telemetry/opentelemetry-go/blob/248da958375e4dfb4a1105645107be3ef04b1c59/exporters/otlp/otlpmetric/otlpmetrichttp/client.go#L201\n- https://github.com/open-telemetry/opentelemetry-go/blob/248da958375e4dfb4a1105645107be3ef04b1c59/exporters/otlp/otlplog/otlploghttp/client.go#L190\n- https://github.com/open-telemetry/opentelemetry-go/blob/248da958375e4dfb4a1105645107be3ef04b1c59/exporters/otlp/otlplog/otlploghttp/client.go#L221\n\nroot cause:\neach exporter client reads `resp.Body` using `io.Copy(\u0026respData, resp.Body)` into a `bytes.Buffer` on both success and error paths, with no upper bound.\n\nimpact:\na malicious collector can force large transient heap allocations during export (peak memory scales with attacker-chosen response size) and can potentially crash the instrumented process (oom).\n\naffected component:\n- go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp\n- go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp\n- go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp\n\nrepro (local-only):\n\n```bash\nunzip poc.zip -d poc\ncd poc\nmake canonical resp_bytes=33554432 chunk_delay_ms=0\n```\n\nexpected output contains:\n\n```\n[CALLSITE_HIT]: otlptracehttp.UploadTraces::io.Copy(resp.Body)\n[PROOF_MARKER]: resp_bytes=33554432 peak_alloc_bytes=118050512\n```\n\ncontrol (same env, patched target):\n\n```bash\nunzip poc.zip -d poc\ncd poc\nmake control resp_bytes=33554432 chunk_delay_ms=0\n```\n\nexpected control output contains:\n\n```\n[CALLSITE_HIT]: otlptracehttp.UploadTraces::io.Copy(resp.Body)\n[NC_MARKER]: resp_bytes=33554432 peak_alloc_bytes=512232\n```\n\nattachments: poc.zip (attached)\n\n[PR_DESCRIPTION.md](https://github.com/user-attachments/files/25564272/PR_DESCRIPTION.md)\n\n[attack_scenario.md](https://github.com/user-attachments/files/25564273/attack_scenario.md)\n\n[poc.zip](https://github.com/user-attachments/files/25564271/poc.zip)\n\n\nFixed in: https://github.com/open-telemetry/opentelemetry-go/pull/8108",
"id": "GHSA-w8rr-5gcm-pp58",
"modified": "2026-04-09T14:29:37Z",
"published": "2026-04-08T19:22:01Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39882"
},
{
"type": "WEB",
"url": "https://github.com/open-telemetry/opentelemetry-go/pull/8108"
},
{
"type": "PACKAGE",
"url": "https://github.com/open-telemetry/opentelemetry-go"
},
{
"type": "WEB",
"url": "http://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.43.0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "opentelemetry-go: OTLP HTTP exporters read unbounded HTTP response bodies"
}
GHSA-XMRV-PMRH-HHX2
Vulnerability from github – Published: 2026-04-08 00:18 – Updated: 2026-04-08 00:18
VLAI
Summary
Denial of Service due to Panic in AWS SDK for Go v2 SDK EventStream Decoder
Details
CVSSv3.1 Rating: [Medium] CVSSv3.1 Score: [5.9] CVSSv3.1 Vector String: [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H]
Summary and Impact
An issue exists in the the EventStream header decoder in AWS SDK for Go v2 in versions predating 2026-03-23. An actor can send a malformed EventStream response frame containing a crafted header value type byte outside the valid range, which can cause the host process to terminate.
Impacted versions: < 2026-03-23
Patches
This issue has been addressed in versions 2026-03-23 and above. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.
Workarounds
Not Applicable
References
If you have any questions or comments about this advisory, we ask that you contact [AWS/Amazon] Security via our vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue.
Severity
5.9 (Medium)
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.7.8"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/aws/aws-sdk-go-v2/service/bedrockagentcore"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.15.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/aws/aws-sdk-go-v2/service/bedrockagentruntime"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.51.8"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/aws/aws-sdk-go-v2/service/bedrockruntime"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.50.4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/aws/aws-sdk-go-v2/service/cloudwatchlogs"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.65.0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/aws/aws-sdk-go-v2/service/iotsitewise"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.52.19"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/aws/aws-sdk-go-v2/service/kinesis"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.43.5"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/aws/aws-sdk-go-v2/service/lambda"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.88.5"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/aws/aws-sdk-go-v2/service/lexruntimev2"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.35.15"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/aws/aws-sdk-go-v2/service/s3"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.97.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/aws/aws-sdk-go-v2/service/sagemakerruntime"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.39.6"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/aws/aws-sdk-go-v2/service/transcribestreaming"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.34.5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-20"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-08T00:18:56Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "**CVSSv3.1 Rating**: [Medium]\n**CVSSv3.1 Score**: [5.9]\n**CVSSv3.1 Vector String**: [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H]\n\n## Summary and Impact\nAn issue exists in the the EventStream header decoder in AWS SDK for Go v2 in versions predating [2026-03-23](https://github.com/aws/aws-sdk-go-v2/releases/tag/release-2026-03-23). An actor can send a malformed EventStream response frame containing a crafted header value type byte outside the valid range, which can cause the host process to terminate.\n\nImpacted versions: \u003c [2026-03-23](https://github.com/aws/aws-sdk-go-v2/releases/tag/release-2026-03-23)\n\n## Patches\nThis issue has been addressed in versions [2026-03-23](https://github.com/aws/aws-sdk-go-v2/releases/tag/release-2026-03-23) and above. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes. \n\n## Workarounds\nNot Applicable\n\n## References\nIf you have any questions or comments about this advisory, we ask that you contact [AWS/Amazon] Security via our [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [aws-security@amazon.com](mailto:aws-security@amazon.com). Please do not create a public GitHub issue.",
"id": "GHSA-xmrv-pmrh-hhx2",
"modified": "2026-04-08T00:18:57Z",
"published": "2026-04-08T00:18:56Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/aws/aws-sdk-go-v2/security/advisories/GHSA-xmrv-pmrh-hhx2"
},
{
"type": "PACKAGE",
"url": "https://github.com/aws/aws-sdk-go-v2"
},
{
"type": "WEB",
"url": "https://github.com/aws/aws-sdk-go-v2/releases/tag/release-2026-03-23"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Denial of Service due to Panic in AWS SDK for Go v2 SDK EventStream Decoder"
}
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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