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.
- Score
- CVSS 3.1 7.5 High
- Status
- Modified - security-advisories@github.com
- Published
- 2026-04-07
- Last modified
- 2026-09-17
- Weaknesses
- CWE-770
Affected products
- Opentelemetry-go (Open-telemetry)
- Opentelemetry (Opentelemetry)
- Acm (Redhat)
- Cert Manager (Redhat)
- Cluster Observability Operator (Redhat)
- Logging (Redhat)
- Multicluster Engine (Redhat)
References
- https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-mh2q-q3fh-2475
- 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
