CVE-2026-118259

opentelemetry-java: Quadratic CPU consumption in W3C tracestate parsing

publishedCWE-1333

opentelemetry-java is the Java implementation of the OpenTelemetry API for recording telemetry, and SDK for managing telemetry recorded by the API. Prior to 1.67.0, W3CTraceContextPropagator.extract() uses regex delimiter processing that can exhibit quadratic backtracking while parsing tracestate headers containing long runs of spaces or tabs without a following comma. An unauthenticated attacker whose headers reach extraction can repeatedly block request or event-loop threads and cause excessive CPU consumption, with practical impact bounded by ingress header-size limits, proxy configuration, and threading. This issue is fixed in version 1.67.0.

Technical severity5.3 mediumCVSS 3.1 · CNA: GitHub_M

Published2026-10-28Source updated 2026-11-02

Collected2026-11-023 attributed sources

Fixes and workarounds

Fix

io.opentelemetry:opentelemetry-api (Maven): OSV reports a fixed version 1.67.0. Check the advisory for supported release branches.

Source: OSV GHSA-ccrj-gw8r-854m

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
opentelemetry-java open-telemetry	< 1.67.0 (affected)	CNA: GitHub_M
io.opentelemetry:opentelemetry-api `io.opentelemetry:opentelemetry-api` Maven	0.10.0 (affected, Maven) 0.11.0 (affected, Maven) 0.12.0 (affected, Maven) 0.13.0 (affected, Maven) 0.13.1 (affected, Maven) 0.14.0 (affected, Maven) 0.14.1 (affected, Maven) 0.15.0 (affected, Maven) 0.16.0 (affected, Maven) 0.17.0 (affected, Maven) 0.17.1 (affected, Maven) 0.2.0 (affected, Maven) 0.2.1 (affected, Maven) 0.2.4 (affected, Maven) 0.3.0 (affected, Maven) 0.4.0 (affected, Maven) 0.4.1 (affected, Maven) 0.5.0 (affected, Maven) 0.6.0 (affected, Maven) 0.7.0 (affected, Maven) 0.7.1 (affected, Maven) 0.8.0 (affected, Maven) 0.9.0 (affected, Maven) 0.9.1 (affected, Maven) 1.0.0 (affected, Maven) 1.0.1 (affected, Maven) 1.1.0 (affected, Maven) 1.10.0 (affected, Maven) 1.10.0-rc.1 (affected, Maven) 1.10.0-rc.2 (affected, Maven) 1.10.1 (affected, Maven) 1.11.0 (affected, Maven) 1.12.0 (affected, Maven) 1.13.0 (affected, Maven) 1.14.0 (affected, Maven) 1.15.0 (affected, Maven) 1.16.0 (affected, Maven) 1.17.0 (affected, Maven) 1.18.0 (affected, Maven) 1.19.0 (affected, Maven) 1.2.0 (affected, Maven) 1.20.0 (affected, Maven) 1.20.1 (affected, Maven) 1.21.0 (affected, Maven) 1.22.0 (affected, Maven) 1.23.0 (affected, Maven) 1.23.1 (affected, Maven) 1.24.0 (affected, Maven) 1.25.0 (affected, Maven) 1.26.0 (affected, Maven) 1.27.0 (affected, Maven) 1.28.0 (affected, Maven) 1.29.0 (affected, Maven) 1.3.0 (affected, Maven) 1.30.0 (affected, Maven) 1.30.1 (affected, Maven) 1.31.0 (affected, Maven) 1.32.0 (affected, Maven) 1.33.0 (affected, Maven) 1.34.0 (affected, Maven) 1.34.1 (affected, Maven) 1.35.0 (affected, Maven) 1.36.0 (affected, Maven) 1.37.0 (affected, Maven) 1.38.0 (affected, Maven) 1.39.0 (affected, Maven) 1.4.0 (affected, Maven) 1.4.1 (affected, Maven) 1.40.0 (affected, Maven) 1.41.0 (affected, Maven) 1.42.0 (affected, Maven) 1.42.1 (affected, Maven) 1.43.0 (affected, Maven) 1.44.0 (affected, Maven) 1.44.1 (affected, Maven) 1.45.0 (affected, Maven) 1.46.0 (affected, Maven) 1.47.0 (affected, Maven) 1.48.0 (affected, Maven) 1.49.0 (affected, Maven) 1.5.0 (affected, Maven) 1.50.0 (affected, Maven) 1.51.0 (affected, Maven) 1.52.0 (affected, Maven) 1.53.0 (affected, Maven) 1.54.0 (affected, Maven) 1.54.1 (affected, Maven) 1.55.0 (affected, Maven) 1.56.0 (affected, Maven) 1.57.0 (affected, Maven) 1.58.0 (affected, Maven) 1.59.0 (affected, Maven) 1.6.0 (affected, Maven) 1.60.0 (affected, Maven) 1.60.1 (affected, Maven) 1.61.0 (affected, Maven) 1.62.0 (affected, Maven) 1.63.0 (affected, Maven) 1.64.0 (affected, Maven) 1.65.0 (affected, Maven) 1.66.0 (affected, Maven) 1.7.0 (affected, Maven) 1.7.1 (affected, Maven) 1.9.0 (affected, Maven) 1.9.1 (affected, Maven) Ecosystem version events: introduced 0; fixed 1.67.0 Source events (ECOSYSTEM) `[ { "introduced": "0" }, { "fixed": "1.67.0" } ]` Other versions: unaffected	OSV GHSA-ccrj-gw8r-854m

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
3.1 / 5.3 medium	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`	CNA: GitHub_M

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

https://github.com/open-telemetry/opentelemetry-java/security/advisories/GHSA-ccrj-gw8r-854mCNA: GitHub_M · x_refsource_CONFIRM
https://github.com/open-telemetry/opentelemetry-java/pull/8914CNA: GitHub_M · x_refsource_MISC
https://github.com/open-telemetry/opentelemetry-java/commit/ba4dfea91647d1ef596975db5d7197681df3c0f5CNA: GitHub_M · x_refsource_MISC
https://github.com/open-telemetry/opentelemetry-java/commit/cc4f5f22aed0d69369941cde8029e73507cf438fCNA: GitHub_M · x_refsource_MISC
https://github.com/open-telemetry/opentelemetry-java/releases/tag/v1.67.0CNA: GitHub_M · x_refsource_MISC
https://github.com/advisories/GHSA-ccrj-gw8r-854mOSV / GitHub Security Advisories · advisory
https://osv.dev/vulnerability/GHSA-ccrj-gw8r-854mOSV / GitHub Security Advisories · osv

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