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CVE-2021-41580

18
FAUCET Score

CVE-2021-41580 affects the passport-oauth2 package before version 1.6.1 for Node.js, specifically concerning how it handles access token acquisition failures. The vulnerability arises when an OAuth identity provider returns an HTTP 200 status code for an authentication failure, and the application grants authorization without validating the token's usability. This medium-severity vulnerability (CVSS 5.3) has a low impact, potentially leading to unauthorized access (C:L), but does not affect integrity or availability. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in the CISA KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.6.1CPE matchmatch criteria
cpe:2.3:a:passportjs:passport-oauth2:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.30%
Probability of exploitation in next 30 days
EPSS Percentile
67.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0130 is in the 47th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: passport-oauth2Fixed in: 1.6.1

Vendor Advisories (1)

npmGHSA-f794-r6xc-hf3vmedium

Improper Access Control in passport-oauth2

Sep 29, 2021

References

github.com / jaredhanson/passport-oauth2/commit/8e3bcdff145a2219033bd782fc517229fe3e05ea
PatchThird Party Advisory
github.com / jaredhanson/passport-oauth2/compare/v1.6.0...v1.6.1
PatchThird Party Advisory
github.com / jaredhanson/passport-oauth2/pull/144
PatchThird Party Advisory