Jenkins Active Directory Plugin deserializes data from LDAP referrals without validation

published 2026-05-27 5 mo ago modified 2026-10-14 25 d ago also GHSA-p2gw-f3rv-82mw , EUVD-2026-32510

cvss: 6.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits: 0; none known

Jenkins Active Directory Plugin 2.41 and earlier deserializes data from LDAP referrals without validation.

Patch / fix

fixed in 1

maven org.jenkins-ci.plugins:active-directory 2.41.1

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 5 mo ago (2026-05-27)

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.6	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	6.6	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
GitHub	3.1	6.6	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
maven	org.jenkins-ci.plugins:active-directory	<2.41.1	2.41.1

Affected products

Jenkins Project Jenkins Active Directory Plugin

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

References

jenkins.io /security/advisory/2026-05-27/#SECURITY-3659
vendor-advisory, web
nvd.nist.gov /vuln/detail/CVE-2026-48919
advisory
github.com /jenkinsci/active-directory-plugin
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary