🛡️ CVE-2026-48916 — ldap

🟡 CVSS 6.6 — Medium ✅ No Known Exploit CWE-918 NVD
6.6
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Jenkins LDAP Plugin follows LDAP referrals

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-48916 is classified as CWE-918: Server-Side Request Forgery (SSRF). The server fetches a URL supplied by the caller, which can be pointed at internal systems it alone can reach.

Affected software

CVE-2026-48916 is recorded against 3 packages.

  • ldap
  • org.jenkins-ci.plugins:ldap (fixed in 807.809.vd3a)
  • unknown

Timeline and source

Published on 27 May 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

www.jenkins.io

Details

Severity MEDIUM
CVSS Score 6.6
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE CWE-918
Public Exploit ✅ No
Source NVD
Published 2026-05-27
Updated 2026-08-12
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
ldap — —
org.jenkins-ci.plugins:ldap — 807.809.vd3a
unknown — —

Similar Threats

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