CVE-2026-48918Network attack vector

Server-side request forgery via unvalidated LDAP referrals

Published May 27, 2026 · Updated May 27, 2026

SSRF in Jenkins Active Directory Plugin 2.41 and earlier allows remote attackers to reach attacker-controlled RMI services via LDAP referrals. The LDAP client follows referral URLs returned by the configured directory server without restricting their destination or protocol. Remote attackers must control that server or intercept its traffic; code execution also requires deserialization gadgets on the controller classpath.

CVSS severity6.6
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Jenkins Active Directory Plugin 2.41 and earlier allows remote attackers to reach attacker-controlled RMI services via LDAP referrals. The LDAP client follows referral URLs returned by the configured directory server without restricting their destination or protocol. Remote attackers must control that server or intercept its traffic; code execution also requires deserialization gadgets on the controller classpath.

The record

CVE
CVE-2026-48918
Published
May 27, 2026
Updated
May 27, 2026
Vendor
Jenkins Project
Product
Active Directory
Classifications
CWE-918, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.41

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Jenkins Project · Active Directoryversion=0 <=2.41

Published CVSS scores

6.6CISA-ADPCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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