opentelemetry-java: Quadratic CPU consumption in W3C tracestate parsing

影響: maven:io.opentelemetry:opentelemetry-api <= 1.66.0 → 1.67.0

OpenTelemetry Java's W3C trace-context propagator permits excessive CPU consumption when extracting crafted tracestate headers, potentially leading to denial of service. Regex backtracking causes quadratic parsing time for headers containing long runs of spaces or tabs without a following comma. Impact An unauthenticated attacker whose headers reach W3CTraceContextPropagator.extract() can cause excessive CPU usage through crafted requests. Parsing blocks the calling thread, potentially affectin…

在 GitHub Advisory Database 阅读

2026/10/29 06:07，GitHub Advisory Database 发布了“opentelemetry-java: Quadratic CPU consumption in W3C tracestate parsing”（类型：漏洞公告）。严重程度为“中危”（medium）。相关技术：Java。CVE：CVE-2026-118259。