CVE-2025-24399: Jenkins OpenId Connect Authentication Plugin 4.452.v2849b_d3945fa_ and earlier, except 4.438.440.v3f5f201de5dc

This month

HIGH 8.8UPGRADE

CVE-2025-24399 is a high-severity flaw (CVSS 8.8) affecting openid connect authentication. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-276
Published	2025-01-22
Last modified	2026-06-17

Publisher (CNA): Jenkins Project · Vendor: jenkins

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-01-22 17:15 UTCPublished CVE record published
2026-06-17 08:58 UTCUpdated Record last modified

jenkins openid connect authentication UPGRADE

Affected: < 4.438.440.v3f5f201de5dc · >= 4.444.vd4c54f157201 and < 4.453.v4d7765c854f4

Fixed in: 4.438.440.v3f5f201de5dc, 4.453.v4d7765c854f4

Safe to downgrade to: a release before 4.444.vd4c54f157201

1. Check installed version

apt-cache policy openid-connect-authentication || rpm -q openid-connect-authentication || openid-connect-authentication --version

2. UPGRADE to 4.438.440.v3f5f201de5dc (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openid-connect-authentication

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openid-connect-authentication

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 4.444.vd4c54f157201 (Debian / Ubuntu)

apt-cache madison openid-connect-authentication sudo apt install openid-connect-authentication=<VERSION_BEFORE_4.444.vd4c54f157201> sudo apt-mark hold openid-connect-authentication

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list openid-connect-authentication sudo dnf downgrade openid-connect-authentication-<VERSION_BEFORE_4.444.vd4c54f157201> sudo dnf versionlock add openid-connect-authentication

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2025-24399?

openid connect authentication: upgrade to 4.438.440.v3f5f201de5dc, 4.453.v4d7765c854f4. Exact commands for each OS are on this page.

Is CVE-2025-24399 being exploited?

CVE-2025-24399 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-2025-24399 affect?

CVE-2025-24399 affects openid connect authentication. Severity is high (CVSS 8.8). 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 pr

How urgent is CVE-2025-24399?

Priority 43/100. High severity

Software pages

Jenkins vulnerabilities

Related CVEs

CVE-2024-52553 HIGH 8.8 UPGRADE Jenkins OpenId Connect Authentication Plugin 4.418.vccc7061f5b_6d and earlier does not invalidate the previous

References

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