CVE-2026-59892: Open-Telemetry Opentelemetry-Js

High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.

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

• Open-Telemetry Opentelemetry-Js: before 2.9.0 (fixed in 2.9.0)

Published 2026-07-08. Last modified 2026-07-10.