CVE-2026-48919 Details
Description
Jenkins Active Directory Plugin 2.41 and earlier deserializes data from LDAP referrals without validation.
A deserialization vulnerability has been identified in the Jenkins Active Directory Plugin, versions through 2.41. The plugin improperly handles data from LDAP referrals, allowing for the deserialization of attacker-controlled data. This issue could lead to remote code execution on the Jenkins controller, provided that deserialization 'gadgets' are available on the classpath. The vulnerability arises because the plugin follows LDAP referrals from the configured Active Directory server by default, which can be manipulated to forward to an RMI URL.
Users can update to Active Directory Plugin version 2.41.1, which no longer follows LDAP referrals by default. Alternatively, administrators unable to update can set the Java system property 'hudson.plugins.active_directory.referral.ignore' to 'true' to mitigate the vulnerability. For those requiring LDAP referrals to be followed, the property can be set to 'false' to restore the previous behavior.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 27, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.jenkins.io/security/advisory/2026-05-27/#SECURITY-3659 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-502 | Deserialization of Untrusted Data | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| jenkins active directory | <= 2.41 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 28, 2026 | Initial Analysis | [email protected] |
| May 27, 2026 | CVE Modified | CISA-ADP |
| May 27, 2026 | New CVE Received | [email protected] |