Bug 2498139 (CVE-2026-59892)

Summary: CVE-2026-59892 @opentelemetry/propagator-jaeger: OpenTelemetry JavaScript: Denial of Service via malformed HTTP header decoding
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: abarbaro, alizardo, dhanak, drosa, dschmidt, dsimansk, jchui, jhe, jlanda, kingland, kshier, ktsao, mnovotny, nboldt, oaljalju, psrna, sausingh, simaishi, stcannon, teagle, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the `@opentelemetry/propagator-jaeger` component of OpenTelemetry JavaScript. This vulnerability allows an unauthenticated remote attacker to send specially crafted HTTP header values, specifically `uber-trace-id` and `uberctx-*`. The component improperly decodes these values without handling potential errors, leading to an uncaught `URIError`. Successful exploitation of this flaw can terminate a Node.js process, resulting in a Denial of Service (DoS).
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Description OSIDB Bzimport 2026-07-08 17:01:31 UTC
OpenTelemetry JavaScript is the OpenTelemetry JavaScript client. Prior to 2.9.0, @opentelemetry/propagator-jaeger decodes incoming uber-trace-id and uberctx-* HTTP header values with decodeURIComponent() without handling decode errors, allowing an unauthenticated remote attacker to send a malformed percent-encoded value that throws an uncaught URIError and terminates a Node.js process using JaegerPropagator as the active propagator. This issue is fixed in version 2.9.0.