Jenkins AD Plugin <2.41.1: LDAP Filter Injection via Unescaped Username
CVE-2026-57288 Published on June 24, 2026
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.
Vulnerability Analysis
CVE-2026-57288 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Weakness Type
What is a LDAP Injection Vulnerability?
The software constructs all or part of an LDAP query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended LDAP query when it is sent to a downstream component.
CVE-2026-57288 has been classified to as a LDAP Injection vulnerability or weakness.
Products Associated with CVE-2026-57288
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Affected Versions
Jenkins Project Jenkins Active Directory Plugin:- Before and including 2.41.1 is affected.