Jenkins LDAP Plugin deserializes data from LDAP referrals without validation

published 2026-05-27 5 mo ago modified 2026-10-26 13 d ago also GHSA-x9v8-p946-5pwc , EUVD-2026-32508

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 LDAP Plugin 807.v7d7de30930cf and earlier deserializes data from LDAP referrals without validation.

Patch / fix

fixed in 1

maven org.jenkins-ci.plugins:ldap 807.809.vd3a

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:ldap	<807.809.vd3a	807.809.vd3a

Affected products

Jenkins Project Jenkins LDAP Plugin

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

References

jenkins.io /security/advisory/2026-05-27/#SECURITY-3654
vendor-advisory, web
nvd.nist.gov /vuln/detail/CVE-2026-48917
advisory
github.com /jenkinsci/ldap-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