CVE-2026-29181

EUVD-2026-19938
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 44.84%
Affected Products (NVD)
VendorProductVersion
opentelemetryopentelemetry
1.36.0 ≤
𝑥
< 1.41.0
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
Red Hatmulticluster engine for Kubernetes 2.11
1780917881 ≤
𝑥
< *
ADP
Red Hatmulticluster engine for Kubernetes 2.8
1784738758 ≤
𝑥
< *
ADP
Debian logo
Debian Releases
Debian Product
Codename
golang-opentelemetry-otel
bookworm
1.1.0-2
fixed
forky
1.43.0-4
fixed
sid
1.43.0-4
fixed
trixie
1.31.0-4
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
golang-opentelemetry-otel
jammy
needs-triage
noble
needs-triage
questing
ignored
resolute
needs-triage
Azure Linux logo
Azure Linux Releases
Azure Package
Release
azurelinux-image-tools
Azure Linux 3.0
0:1.3.0-1.azl3
fixed
etcd
Azure Linux 3.0
0:3.5.30-2.azl3
fixed
ignition-flatcar
Azure Linux 3.0
0:2.22.0-5.azl3
fixed
Common Weakness Enumeration
Vulnerability Media Exposure
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/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