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.
Metrics
Affected Vendors & Products
References
History
Mon, 02 Nov 2026 22:30:00 +0000
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ssvc
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Wed, 28 Oct 2026 21:00:00 +0000
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Opentelemetry
Opentelemetry opentelemetry-java |
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Opentelemetry
Opentelemetry opentelemetry-java |
Wed, 28 Oct 2026 19:00:00 +0000
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| 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. | |
| Title | opentelemetry-java: Quadratic CPU consumption in W3C tracestate parsing | |
| Weaknesses | CWE-1333 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-10-28T18:53:25.875Z
Updated: 2026-11-02T20:30:39.997Z
Reserved: 2026-10-27T20:13:55.314Z
Link: CVE-2026-118259
Updated: 2026-11-02T20:30:32.999Z
Status : Awaiting Analysis
Published: 2026-10-28T19:17:30.510
Modified: 2026-11-02T21:17:26.583
Link: CVE-2026-118259
No data.