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OpenAdvisories
High · 7.5 CVE-2026-59892 EUVD-2026-42324GHSA-45rx-2jwx-cxfr

OpenTelemetry JavaScript: Denial of service in `JaegerPropagator` via unhandled exception on a malformed header

Published Jul 8, 2026 · Updated Jul 8, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
open-telemetry opentelemetry-js < 2.9.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm @opentelemetry/propagator-jaeger < 2.9.0 2.9.0 GHSA-45rx-2jwx-cxfr

References