CVE-2026-29181
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| open-telemetry | opentelemetry-go | >= 1.36.0, < 1.41.0 | affected |
Weaknesses
- CWE-770: CWE-770: Allocation of Resources Without Limits or Throttling
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: yes
- Technical Impact: partial
github.com/open-telemetry/opentelemetry-go: OpenTelemetry-Go: Denial of Service via crafted multi-value baggage headers
Additional References
- 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
- https://access.redhat.com/errata/RHSA-2026:25271
References
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