CVE-2026-41178 MEDIUM

CVE-2026-41178: OpenTelemetry-Go's baggage parsing no longer caps raw header length

Vendor Open-Telemetry
Product go.opentelemetry.io/otel/baggage
Weakness CWE-789
Published June 4, 2026
Last update June 4, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 4, 2026 CVE published
June 4, 2026 Record updated