CVE-2026-41178: Opentelemetry

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Opentelemetry Opentelemetry: before 1.42.0 (fixed in 1.42.0); version 1.43.0 only

Published 2026-06-04. Last modified 2026-07-22.