OpenTelemetry JavaScript Client Vulnerability in Jaeger Propagator
CVE-2026-59892

7.5HIGH

Key Information:

Vendor

Open-telemetry

Status
Opentelemetry-js
Vendor
CVE Published:
8 July 2026

What is CVE-2026-59892?

The OpenTelemetry JavaScript client, specifically the @opentelemetry/propagator-jaeger, is vulnerable to a flaw where it decodes incoming HTTP headers (uber-trace-id and uberctx-*) using decodeURIComponent() without proper error handling. This oversight allows an unauthenticated remote attacker to exploit the system by sending a malformed percent-encoded value. The result can cause an uncaught URIError that disrupts the Node.js process tied to the JaegerPropagator. Users are encouraged to upgrade to version 2.9.0 or later to mitigate this risk.

Affected Version(s)

opentelemetry-js < 2.9.0

References

https://github.com/open-telemetry/opentelemetry-js/securi...
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https://github.com/open-telemetry/opentelemetry-js/commit...
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https://github.com/open-telemetry/opentelemetry-js/releas...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.