CVE-2026-48918
published 2026-05-27CVE-2026-48918: Jenkins Active Directory Plugin 2.41 and earlier follows LDAP referrals by default.
PriorityP434medium6.6CVSS 3.1
AVNACHPRHUINSUCHIHAH
EPSS
0.37%
29.9th percentile
Jenkins Active Directory Plugin 2.41 and earlier follows LDAP referrals by default.
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 follows LDAP referrals by default
ghsa·2026-05-27
CVE-2026-48918 [MEDIUM] CWE-918 Jenkins Active Directory Plugin follows LDAP referrals by default
Jenkins Active Directory Plugin follows LDAP referrals by default
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.plugins.active_directory.r
VulDB
Active Directory Plugin up to 2.41 on Jenkins privilege escalation
vuldb·2026-05-27·CVSS 6.6
CVE-2026-48918 [MEDIUM] Active Directory Plugin up to 2.41 on Jenkins privilege escalation
A vulnerability classified as critical was found in Active Directory Plugin up to 2.41 on Jenkins. Affected by this issue is some unknown functionality. Such manipulation leads to privilege escalation.
This vulnerability is uniquely identified as CVE-2026-48918. The attack can only be initiated within the local network. No exploit exists.
GHSA
GHSA-wrhr-54p6-q97f: Jenkins Active Directory Plugin 2
ghsa_unreviewed·2026-05-27
CVE-2026-48918 [MEDIUM] CWE-918 GHSA-wrhr-54p6-q97f: Jenkins Active Directory Plugin 2
Jenkins Active Directory Plugin 2.41 and earlier follows LDAP referrals by default.
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