Vulnerability · Published Jul 8, 2026 · Assigned by GitHub_M

CVE-2026-59892OpenTelemetry JavaScript: Denial of service in `JaegerPropagator` via unhandled exception on a malformed header

High 7.5

In plain English

A high-severity security flaw in opentelemetry-js from open-telemetry. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.6%top 53.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	@opentelemetry/propagator-jaeger	2.9.0	GHSA-45rx-2jwx-cxfr

Affected products (as reported)

Vendor	Product	Versions
open-telemetry	opentelemetry-js	< 2.9.0

Weakness: CWE-248 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-45rx-2jwx-cxfr x_refsource_CONFIRM
https://github.com/open-telemetry/opentelemetry-js/commit/b1c196d49d54caae59741cca0a9d57d101d7ea88 x_refsource_MISC
https://github.com/open-telemetry/opentelemetry-js/releases/tag/v2.9.0 x_refsource_MISC