CVE-2026-44902

What it is

opentelemetry-js is the OpenTelemetry JavaScript Client. Prior to 0.217.0, a single malformed HTTP request crashes any Node.js process running the OpenTelemetry JS Prometheus exporter. The metrics endpoint (default 0.0.0.0:9464) has no error handling around URL parsing, so a request with an invalid URI causes an uncaught TypeError that terminates the process. This vulnerability is fixed in 0.217.0.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

0.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-05-27 15:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-08-27 16:16 UTC Last updatedMost recent change to the record

Details

Published

2026-05-27 15:16 UTC

Last modified

2026-08-27 16:16 UTC

Exploit probability

0.5% · EPSS, next 30 days

Weakness

CWE-755

Record status

Analyzed

Affected

• Opentelemetry opentelemetry\/auto-instrumentations-node < 0.75.0
• Opentelemetry opentelemetry\/exporter-prometheus < 0.217.0
• Opentelemetry opentelemetry\/sdk-node < 0.217.0

Attack profile CVSS 3.1 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High