VULNERABILITY INTELLIGENCE

CVE-2026-29181

CVSS score7.5 HIGH
EPSS probability0.79%
CISA KEVNot currently listed
Published2026-04-07
Last modified2026-09-11
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • security-advisories@github.com: CWE-770
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-770

Primary references