CVE-2026-48919
published 2026-05-27CVE-2026-48919: Jenkins Active Directory Plugin 2.41 and earlier deserializes data from LDAP referrals without validation.
PriorityP335medium6.6CVSS 3.1
AVNACHPRHUINSUCHIHAH
EPSS
0.27%
18.8th percentile
Jenkins Active Directory Plugin 2.41 and earlier deserializes data from LDAP referrals without validation.
Affected
24 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| jenkins | active_directory | <= 2.41 | — |
| jenkins | active_directory | — | — |
| jenkins | active_directory_plugin | — | — |
| jenkins | appspider | — | — |
| jenkins | appspider_plugin | — | — |
| jenkins | bitbucket_oauth | — | — |
| jenkins | bitbucket_oauth_plugin | — | — |
| jenkins | credentials_binding | — | — |
| jenkins | credentials_binding_plugin | — | — |
| jenkins | email_extension | — | — |
| jenkins | email_extension_plugin | — | — |
| jenkins | github_integration | — | — |
| jenkins | github_integration_plugin | — | — |
| jenkins | groovy_libraries | — | — |
| jenkins | groovy_libraries_plugin | — | — |
| jenkins | job_import | — | — |
| jenkins | job_import_plugin | — | — |
| jenkins | ldap | — | — |
| jenkins | ldap_plugin | — | — |
| jenkins | ldap_referrals_in_active_directory | — | — |
| jenkins | ldap_referrals_in_active_directory_plugin | — | — |
| jenkins | multijob | — | — |
| jenkins | multijob_plugin | — | — |
| jenkins_project | jenkins_active_directory_plugin | <= 2.41 | — |
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GHSA
Jenkins Active Directory Plugin deserializes data from LDAP referrals without validation
ghsa·2026-05-27
CVE-2026-48919 [MEDIUM] CWE-502 Jenkins Active Directory Plugin deserializes data from LDAP referrals without validation
Jenkins Active Directory Plugin deserializes data from LDAP referrals without validation
Jenkins Active Directory Plugin 2.41 and earlier follows LDAP referrals from the configured Active Directory server by default. These can forward to an RMI URL that causes Jenkins to deserialize attacker-controlled data, resulting in Remote Code Execution (RCE) on the Jenkins controller if deserialization "gadgets" are available on the classpath.
This allows attackers able to control the configured Active Directory server, or able to perform a machine-in-the-middle attack, to execute code on the Jenkins controller.
Active Directory Plugin 2.41.1 no longer follows LDAP referrals by default.
Administrators unable to update to a fixed version can start Jenkins with the Java system property `hudson.plu
VulDB
Active Directory Plugin up to 2.41 on Jenkins deserialization
vuldb·2026-05-27·CVSS 6.6
CVE-2026-48919 [MEDIUM] Active Directory Plugin up to 2.41 on Jenkins deserialization
A vulnerability was found in Active Directory Plugin up to 2.41 on Jenkins. It has been declared as critical. The impacted element is an unknown function. Such manipulation leads to deserialization.
This vulnerability is listed as CVE-2026-48919. The attack must be carried out from within the local network. There is no available exploit.
GHSA
GHSA-p2gw-f3rv-82mw: Jenkins Active Directory Plugin 2
ghsa_unreviewed·2026-05-27
CVE-2026-48919 [MEDIUM] CWE-502 GHSA-p2gw-f3rv-82mw: Jenkins Active Directory Plugin 2
Jenkins Active Directory Plugin 2.41 and earlier deserializes data from LDAP referrals without validation.
Jenkins
Jenkins Security Advisory 2026-05-27
vendor_jenkins·2026-05-27·CVSS 6.6
CVE-2026-48916 [MEDIUM] Jenkins Security Advisory 2026-05-27
Title: Jenkins Security Advisory 2026-05-27
Jenkins Security Advisory 2026-05-27
Jenkins Security Home
For Administrators
Overview
Terminology
Vulnerabilities and Scoring
Security Advisories
Security Issues
Advisory Schedule
Vulnerabilities in Plugins
How We Fix Security Issues
For Reporters
Reporting Vulnerabilities
Jenkins CNA
For Maintainers
Overview
Vulnerabilities in Plugins
Jenkins Security Team
About
Contributions
This advisory announces vulnerabilities in the following Jenkins deliverables:
Active Directory
Plugin
AppSpider
Plugin
Bitbucket OAuth
Plugin
buildgraph-view
Plugin
Credentials Binding
Plugin
Email Extension
Plugin
GitHub Integration
Plugin
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-05-27
Published