# CVE-2026-57288: Jenkins Active Directory Plugin LDAP injection in ADSI authentication path

Source: https://junglewise.ai/threats/cve-2026-57288-jenkins-active-directory-plugin-ldap-injection-in-adsi  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-24. Updated: 2026-06-24  
License: CC BY 4.0 with a link back

CVE-2026-57288 · Severity: low · CVSS 3.7 · Published 2026-06-24

The Jenkins Active Directory Plugin is used to allow users to log into Jenkins using their corporate Windows credentials. A security flaw in this plugin allows attackers to use special characters to search the directory and log in as users without knowing their full usernames, provided they have the correct password. This could lead to unauthorized access to the Jenkins automation server and potential exposure of sensitive build data.

Technologies: [org.jenkins-ci.plugins:active-directory (Maven)](https://junglewise.ai/threats/technologies/org-jenkins-ci-plugins-active-directory). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2026-57288 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-57288 being exploited in the wild.

**How severe is CVE-2026-57288?** Low severity, with a CVSS score of 3.7, published 24 June 2026.

**Which products and versions are affected?** org.jenkins-ci.plugins:active-directory (Maven) < 2.41.2, ECOSYSTEM:introduced=0,fixed=2.41.2.

**Is there a fix for CVE-2026-57288?** Yes. org.jenkins-ci.plugins:active-directory (Maven): upgrade to 2.41.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-57288 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-57288?** Check whether you run org.jenkins-ci.plugins:active-directory (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- org.jenkins-ci.plugins:active-directory (Maven): upgrade to 2.41.2 or later

  ```sh
  # set org.jenkins-ci.plugins:active-directory to 2.41.2 in your pom.xml or build.gradle
  ```


## Technical details

The vulnerability exists in the Windows native (ADSI) authentication path of the Jenkins Active Directory Plugin. Due to a failure to sanitize or escape the username field before it is incorporated into an LDAP search filter, the component is susceptible to LDAP injection. An unauthenticated attacker can use LDAP wildcard characters (e.g., '*') to enumerate directory entries. Furthermore, an attacker who possesses a valid password for a user account can successfully authenticate without knowing the exact username by using wildcards to match the target entry. This issue affects versions 2.41.1 and earlier.

## Affected products

- Jenkins Project Active Directory Plugin 2.41.1 and earlier

## Identifiers

- CVE-2026-57288
- GHSA-gx55-p8g7-p3fh

## Timeline

- 2026-06-24: disclosed
- 2026-06-24: advisory

## References

- [https://www.jenkins.io/security/advisory/2026-06-24/](https://www.jenkins.io/security/advisory/2026-06-24/)

## Related threats

- [Jenkins Active Directory Plugin deserialization via LDAP referrals](https://junglewise.ai/threats/cve-2026-48919-jenkins-active-directory-plugin-deserialization-via-ldap)
- [Jenkins Active Directory Plugin RCE via LDAP referral following](https://junglewise.ai/threats/cve-2026-48918-jenkins-active-directory-plugin-rce-via-ldap-referral-following)
- [Jenkins Active Directory Plugin vulnerable to Active Directory credential disclosure](https://junglewise.ai/threats/cve-2023-37943-jenkins-active-directory-plugin-vulnerable-to-active-directory)
- [Missing permission check in Jenkins Active Directory Plugin allows accessing domain health check page](https://junglewise.ai/threats/cve-2020-2302-missing-permission-check-in-jenkins-active-directory-plugin-allows)
- [CSRF vulnerability in Jenkins Active Directory Plugin](https://junglewise.ai/threats/cve-2020-2303-csrf-vulnerability-in-jenkins-active-directory-plugin)