CVE-2026-41178CWE-789

OpenTelemetry-Go's baggage parsing no longer caps raw header length

Medium · published June 4, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
25.7
In the wild
Unconfirmed
What it is

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Versions 1.41.0 and 1.43.0 removed raw-length rejection and it causes `Parse` to process arbitrarily large/invalid baggage headers and log errors, enabling DoS via oversized inputs. Versions 1.42.0 and 1.44.0 fix the issue.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00336 · 25.7th percentile
Weakness
CWE-789 · Memory Allocation with Excessive Size Value
Published
2026-06-04T14:38Z
EPSS history
Timeline
  • 04 JUN 14:38Z
    OpenTelemetry-Go's baggage parsing no longer caps raw header length
    cvelistv5