{"cve":"CVE-2026-118259","nvd":{"published":"2026-10-28T19:17:30.510","modified":"2026-10-28T19:17:30.510","status":"Received","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-1333"],"references":["https://github.com/open-telemetry/opentelemetry-java/commit/ba4dfea91647d1ef596975db5d7197681df3c0f5","https://github.com/open-telemetry/opentelemetry-java/commit/cc4f5f22aed0d69369941cde8029e73507cf438f","https://github.com/open-telemetry/opentelemetry-java/pull/8914","https://github.com/open-telemetry/opentelemetry-java/releases/tag/v1.67.0","https://github.com/open-telemetry/opentelemetry-java/security/advisories/GHSA-ccrj-gw8r-854m"],"products":[],"source":"nvd","synced_at":"2026-10-28T19:37:43.506563291+00:00"},"epss":null,"kev":null,"osv":[{"id":"GHSA-ccrj-gw8r-854m","url":"https://osv.dev/vulnerability/GHSA-ccrj-gw8r-854m","summary":"opentelemetry-java: Quadratic CPU consumption in W3C tracestate parsing","modified":"2026-10-28T21:15:04.329194019Z","packages":[{"ecosystem":"Maven","name":"io.opentelemetry:opentelemetry-api","purl":"pkg:maven/io.opentelemetry/opentelemetry-api","ranges":["<1.67.0"],"fixed":["1.67.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}