Your RSA-2048 keys break in 2030. Find every one of them before attackers do.
☕
☕ Maven
Not in CISA KEV
MEDIUM severity

Jenkins LDAP Plugin follows LDAP referralsGHSA-fmjp-mw89-c6h6

MEDIUM

GHSA-fmjp-mw89-c6h6 is a medium-severity (CVSS 6.6) Server-Side Request Forgery (SSRF) vulnerability in org.jenkins-ci.plugins:ldap. A fix is available for org.jenkins-ci.plugins:ldap — see the affected versions and patch details below.

Also known asCVE-2026-48916
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • A successful exploit gives an attacker total control of the affected component, not partial access.
  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-fmjp-mw89-c6h6.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs29th percentile — riskier than 29% of all scored CVEsHighest risk
0.00%0.29%0.58%0.87%0.0%0.4%Jun 26Sep 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-fmjp-mw89-c6h6 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 384,534 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
☕org.jenkins-ci.plugins:ldap

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:ldapall versions807.809.vd3aorg.jenkins-ci.plugins:ldap:807.809.vd3a

Affected Products

1 product · 2 configurations
Application
ldapjenkins
≤ 793.v754d6b_41b_ea_4
1 version
807.v7d7de30930cf

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jenkins-ci.plugins:ldap, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.jenkins-ci.plugins:ldap to 807.809.vd3a or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fmjp-mw89-c6h6 is resolved across your whole dependency graph.

  3. Workarounds

    Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.

Frequently Asked Questions

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.
O3 Security · Impact-Aware SCA

Is GHSA-fmjp-mw89-c6h6 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works
Jenkins LDAP Plugin follows LDAP referrals (Medium 6.6)