Vulnerability in Open-Telemetry Opentelemetry-Js
CVE-2026-59892
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.
EPSS: 0.005 (38.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Open-telemetry Opentelemetry-js — versions < 2.9.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-59892?
- CVE-2026-59892 is a high-severity vulnerability in Open-Telemetry Opentelemetry-Js, classified under CWE-248. CVSS score: 7.5/10. Published 2026-07-08.
- How severe is CVE-2026-59892?
- High severity. CVSS v3 base score is 7.5 out of 10.