CVE-2025-24399

Name: CVE-2025-24399
Creator: NVD / NIST
Published: 2025-01-22T17:15:13.853+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2025-24399 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.53%

40.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-276

Affected Software

Vendor	Product	Versions
Jenkins	Openid Connect Authentication	< 4.438.440.v3f5f201de5dc
Jenkins	Openid Connect Authentication	>= 4.444.vd4c54f157201, < 4.453.v4d7765c854f4

References

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

Timeline

Published: Jan 22, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-24399?

How severe is CVE-2025-24399?

CVE-2025-24399 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2025-24399?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-24399?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST