CVE-2026-29181

Description

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.

PUBLISHED Reserved 2026-03-04 | Published 2026-04-07 | Updated 2026-04-08 | Assigner GitHub_M

Problem types

CWE-770: Allocation of Resources Without Limits or Throttling

Product status

References

github.com/...try-go/security/advisories/GHSA-mh2q-q3fh-2475

cve.org (CVE-2026-29181)

nvd.nist.gov (CVE-2026-29181)

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