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MEDIUM severity

Jenkins Reverse Proxy Auth Plugin cross-site request forgery vulnerabilityGHSA-pmmr-r9v2-59p8

MEDIUM

GHSA-pmmr-r9v2-59p8 is a medium-severity (CVSS 4.3) Cross-Site Request Forgery (CSRF) vulnerability in org.jenkins-ci.plugins:reverse-proxy-auth-plugin. A fix is available for org.jenkins-ci.plugins:reverse-proxy-auth-plugin — see the affected versions and patch details below.

Also known asCVE-2023-32987
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 5, 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-pmmr-r9v2-59p8.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs39th percentile — riskier than 39% of all scored CVEsHighest risk
0.00%0.32%0.63%0.95%0.1%0.4%May 26Sep 26Nov 26

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

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
☕org.jenkins-ci.plugins:reverse-proxy-auth-plugin

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 Reverse Proxy Auth Plugin 1.7.4 and earlier does not require POST requests for a form validation method, resulting in a cross-site request forgery (CSRF) vulnerability.

This vulnerability allows attackers to connect to an attacker-specified LDAP server using attacker-specified credentials.

Reverse Proxy Auth Plugin 1.7.5 requires POST requests for the affected form validation method.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:reverse-proxy-auth-pluginall versions1.7.5org.jenkins-ci.plugins:reverse-proxy-auth-plugin:1.7.5

Affected Products

1 product · 1 configurations
Application
reverse proxy authjenkins
≤ 1.7.4
range

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:reverse-proxy-auth-plugin, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.jenkins-ci.plugins:reverse-proxy-auth-plugin to 1.7.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-pmmr-r9v2-59p8 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Jenkins Reverse Proxy Auth Plugin 1.7.4 and earlier does not require POST requests for a form validation method, resulting in a cross-site request forgery (CSRF) vulnerability. This vulnerability allows attackers to connect to an attacker-specified LDAP server using attacker-specified credentials. Reverse Proxy Auth Plugin 1.7.5 requires POST requests for the affected form validation method.
O3 Security · Impact-Aware SCA

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Jenkins Reverse Proxy Auth Plugin cross-site request…