PatchTheCVECVE-2021-41580: The passport-oauth2 package before 1.6.1 for Node.js mishandles the error condition of failure to obtain an ac
CVE-2021-41580 is a medium-severity flaw (CVSS 5.3) affecting passport-oauth2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 passpor
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.3% (top 30%) |
| CISA exploited list | No |
| Published | 2021-09-27 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-41580?
passport-oauth2: upgrade to 1.6.1. Exact commands for each OS are on this page.
Is CVE-2021-41580 being exploited?
CVE-2021-41580 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-41580 affect?
CVE-2021-41580 affects passport-oauth2. Severity is medium (CVSS 5.3). 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 authenticat
How urgent is CVE-2021-41580?
Priority 41/100. Remotely exploitable, no login, no user action