Active Directory Plugin up to 2.41.1 on Jenkins LDAP Search Filter Parser injection

Summaryinfo

A vulnerability labeled as critical has been found in Active Directory Plugin up to 2.41.1 on Jenkins. This impacts an unknown function of the component LDAP Search Filter Parser. Such manipulation leads to injection. This vulnerability is referenced as CVE-2026-57288. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Active Directory Plugin up to 2.41.1 on Jenkins. Affected by this issue is an unknown part of the component LDAP Search Filter Parser. The manipulation with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at jenkins.io. This vulnerability is handled as CVE-2026-57288 since 06/24/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 06/24/2026). This vulnerability is assigned to T1055 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Jenkins Plugin

Name

• Active Directory Plugin

Version

• 2.41.0
• 2.41.1

CPE 2.3info

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• 🔒

CPE 2.2info

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• 🔒

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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