CVE-2026-48917
Jenkins LDAP Plugin deserializes data from LDAP referrals without validation
Jenkins LDAP Plugin 807.v7d7de30930cf 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 LDAP Plugin 807.v7d7de30930cf and earlier deserializes data from LDAP referrals without validation.
- Record
CVE-2026-48917- 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-2026-32508
Jenkins LDAP Plugin 807.v7d7de30930cf and earlier deserializes data from LDAP referrals without validation.
- Record
EUVD-2026-32508- 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-x9v8-p946-5pwc
Jenkins LDAP Plugin deserializes data from LDAP referrals without validation
Jenkins LDAP Plugin 807.v7d7de30930cf and earlier follows LDAP referrals from the configured LDAP server. 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 LDAP server, or able to perform a machine-in-the-middle attack, to execute code on the Jenkins controller.
LDAP Plugin 807.809.vd3a_4e5e4ec98 no longer follows LDAP referrals.
- Record
GHSA-x9v8-p946-5pwc- 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 LDAP Plugin 807.v7d7de30930cf and earlier deserializes data from LDAP referrals without validation.
- Record
CVE-2026-48917- 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 LDAP Plugin 807.v7d7de30930cf and earlier deserializes data from LDAP referrals without validation.
- Record
CVE-2026-48917- 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-x9v8-p946-5pwc
Jenkins LDAP Plugin deserializes data from LDAP referrals without validation
Jenkins LDAP Plugin 807.v7d7de30930cf and earlier follows LDAP referrals from the configured LDAP server. 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 LDAP server, or able to perform a machine-in-the-middle attack, to execute code on the Jenkins controller.
LDAP Plugin 807.809.vd3a_4e5e4ec98 no longer follows LDAP referrals.
- Record
GHSA-x9v8-p946-5pwc- 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:ldapMaven |
through 807.v7d7de30930cf | 807.809.vd3a |
org.jenkins-ci.plugins:ldapMaven |
before 807.809.vd3a, plus listed versions 1.01.11.101.10.11.10.2 Show 45 moreShow less1.111.121.131.141.151.161.16-beta-11.16-beta-21.171.181.191.21.201.211.221.231.241.251.261.31.41.51.61.71.81.92.02.12.102.10.12.112.122.22.32.42.52.62.72.82.9659.v8ca_b_a_fe79fa_d671.673.vc045dcdd856b_671.v2a_9192a_7419d673.v034ec70ec2b_b_676.vfa_64cf6b_b_002 |
807.809.vd3a |
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-2026-48917 is a medium vulnerability (CVSS 6.6) in Jenkins Ldap, 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:ldap 807.809.vd3a.
References
Left out here: 16 versions. The JSON record has them.