CVE-2026-41178: opentelemetry-go's baggage parsing no longer caps raw header length

May 28, 2026 (updated June 9, 2026)

https://github.com/open-telemetry/opentelemetry-go/pull/7880 removed raw-length rejection and it causes Parse to process arbitrarily large/invalid baggage headers and log errors, enabling DoS via oversized inputs.

References

github.com/advisories/GHSA-5wrp-cwcj-q835
github.com/open-telemetry/opentelemetry-go/pull/7880
github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-5wrp-cwcj-q835
nvd.nist.gov/vuln/detail/CVE-2026-41178

Code Behaviors & Features

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