CVE-2026-57288 Jenkins Active Directory Plugin has an LDAP injection vulnerability

What is CVE-2026-57288?

CVE-2026-57288 is a low-severity vulnerability in Jenkins Active Directory Plugin, published on 24 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Jenkins Active Directory Plugin 2.41.1 and earlier does not escape the user name before building the LDAP search filter in the Windows native (ADSI) authentication path, allowing unauthenticated attackers to inject LDAP wildcard characters to enumerate directory entries and to authenticate as a matching user whose password they know without knowing their exact user name.

Weakness: CWE-90

Which versions are affected by CVE-2026-57288?

2 open source packages ship an affected version, including org.jenkins-ci.plugins:active-directory. It affects 1 product.

Products include Jenkins Active Directory.

How do I fix CVE-2026-57288?

Upgrade org.jenkins-ci.plugins:active-directory to 2.41.2 or later.

Is CVE-2026-57288 being exploited?

There is no known exploitation of CVE-2026-57288 in the wild and no public exploit code.

Other vulnerabilities in Jenkins Active Directory Plugin

• CVE-2020-2299 Improper Authentication in Jenkins Active Directory Plugin Critical 9.8
• CVE-2020-2300 Improper Authentication (empty password) in Jenkins Active Directory Plugin Critical 9.8
• CVE-2020-2301 Authentication cache in Active Directory Jenkins Plugin allows logging in with any password Critical 9.8
• CVE-2017-2649 Jenkins Active Directory Plugin did not verify certificate of AD server High 8.1
• CVE-2019-1003009 Jenkins Active Directory Plugin Improper certificate validation with StartTLS High 7.4

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-gx55-p8g7-p3fh.