CVE-2026-29181

OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.36.0 to 1.40.0, multi-value baggage: header extraction parses each header field-value independently and aggregates members across values. This allows an attacker to amplify cpu and allocations by sending many baggage: header lines, even when each individual value is within the 8192-byte per-value parse limit. This vulnerability is fixed in 1.41.0.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-mh2q-q3fh-2475	Exploit Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:25271
https://access.redhat.com/errata/RHSA-2026:47735
https://access.redhat.com/errata/RHSA-2026:61314
https://access.redhat.com/errata/RHSA-2026:63140
https://access.redhat.com/errata/RHSA-2026:66521
https://access.redhat.com/security/cve/CVE-2026-29181
https://bugzilla.redhat.com/show_bug.cgi?id=2456252
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29181.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:go:*:*

History

No history.

Information

Published : 2026-04-07 21:17

Updated : 2026-09-11 13:17

NVD link : CVE-2026-29181

Mitre link : CVE-2026-29181

CVE.ORG link : CVE-2026-29181

JSON object : View

Products Affected

opentelemetry

opentelemetry

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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From 1.36.0 to 1.40.0, multi-value baggage: header extraction parses each header field-value independently and aggregates members across values. This allows an attacker to amplify cpu and allocations by sending many baggage: header lines, even when each individual value is within the 8192-byte per-value parse limit. This vulnerability is fixed in 1.41.0."}, {"lang": "es", "value": "OpenTelemetry-Go es la implementaci\u00f3n en Go de OpenTelemetry. Desde la versi\u00f3n 1.36.0 hasta la 1.40.0, la extracci\u00f3n de encabezados 'baggage' con m\u00faltiples valores analiza cada par campo-valor del encabezado de forma independiente y agrega los miembros a trav\u00e9s de los valores. Esto permite a un atacante amplificar el uso de CPU y las asignaciones de memoria enviando muchas l\u00edneas de encabezado 'baggage', incluso cuando cada valor individual est\u00e1 dentro del l\u00edmite de an\u00e1lisis de 8192 bytes por valor. 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