CVE-2025-24399

What it is

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.

At a glance

Exploitability

Can be exploited over the network with a low-privilege account. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.6% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2025-01-22 17:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 08:58 UTC Last updatedMost recent change to the record

Details

Published

2025-01-22 17:15 UTC

Last modified

2026-06-17 08:58 UTC

Exploit probability

0.6% · EPSS, next 30 days

Weakness

CWE-276 · Incorrect default permissions

Record status

Analyzed

Affected

• Jenkins Openid Connect Authentication < 4.438.440.v3f5f201de5dc
• Jenkins Openid Connect Authentication < 4.453.v4d7765c854f4

Attack profile CVSS 3.1 · 8.8

Attack vector

Network

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High