CVE-2026-48919
Jenkins Active Directory Plugin deserializes data from LDAP referrals without validation
Jenkins Active Directory Plugin 2.41 and earlier deserializes data from LDAP referrals without validation.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Jenkins Active Directory Plugin 2.41 and earlier deserializes data from LDAP referrals without validation.
- Record
CVE-2026-48919- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
EUVDEUVD-2026-32510
Jenkins Active Directory Plugin 2.41 and earlier deserializes data from LDAP referrals without validation.
- Record
EUVD-2026-32510- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-p2gw-f3rv-82mw
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.plugins.active_directory.referral.ignore set to true to mitigate the vulnerability.
Administrators of Jenkins controllers requiring following LDAP referrals can set the Java system property hudson.plugins.active_directory.referral.ignore to false to restore the previous behavior.
- Record
GHSA-p2gw-f3rv-82mw- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
NVD
Jenkins Active Directory Plugin 2.41 and earlier deserializes data from LDAP referrals without validation.
- Record
CVE-2026-48919- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
OSV
Jenkins Active Directory Plugin 2.41 and earlier deserializes data from LDAP referrals without validation.
- Record
CVE-2026-48919- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-p2gw-f3rv-82mw
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.plugins.active_directory.referral.ignore set to true to mitigate the vulnerability.
Administrators of Jenkins controllers requiring following LDAP referrals can set the Java system property hudson.plugins.active_directory.referral.ignore to false to restore the previous behavior.
- Record
GHSA-p2gw-f3rv-82mw- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.jenkins-ci.plugins:active-directoryMaven |
before 2.41.1 | 2.41.1 |
org.jenkins-ci.plugins:active-directoryMaven |
before 2.41.1, plus listed versions 1.181.191.201.211.22 Show 45 moreShow less1.231.241.251.261.271.281.291.301.311.321.331.341.351.361.371.381.391.411.421.431.441.451.461.471.481.492.02.12.102.112.122.132.142.152.162.16.12.172.182.192.22.202.222.232.23.12.24 |
2.41.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-48919 is a medium vulnerability (CVSS 6.6) in Jenkins Active Directory, published May 27, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 17th percentile. Fixed in org.jenkins-ci.plugins:active-directory 2.41.1.
References
Left out here: 27 versions. The JSON record has them.