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MEDIUM severity

Jenkins Multijob Plugin has a cross-site request forgery (CSRF) vulnerabilityGHSA-hj3h-r49w-34wh

MEDIUM

GHSA-hj3h-r49w-34wh is a medium-severity (CVSS 4.3) Cross-Site Request Forgery (CSRF) vulnerability in org.jenkins-ci.plugins:jenkins-multijob-plugin. A fix is available for org.jenkins-ci.plugins:jenkins-multijob-plugin — see the affected versions and patch details below.

Also known asCVE-2026-9674
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

  • 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-hj3h-r49w-34wh.

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs15th percentile — riskier than 15% of all scored CVEsHighest risk
0.00%0.25%0.50%0.75%0.0%0.3%Jun 26Sep 26Oct 26

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

How urgent is this, really

GHSA-hj3h-r49w-34wh 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:jenkins-multijob-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 Multijob Plugin 662.vd2e0001f6b_b_d and earlier does not require POST requests for an HTTP endpoint, resulting in a cross-site request forgery (CSRF) vulnerability.

This vulnerability allows attackers to resume failed Multijob builds.

Multijob Plugin 669.v9d96a_d9c71b_0 requires POST requests for the affected HTTP endpoint.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:jenkins-multijob-pluginall versions669.v9d96aorg.jenkins-ci.plugins:jenkins-multijob-plugin:669.v9d96a

Affected Products

1 product · 1 configurations
Application
multijobjenkins
< 669.v9d96a_d9c71b_0
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:jenkins-multijob-plugin, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.jenkins-ci.plugins:jenkins-multijob-plugin to 669.v9d96a or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-hj3h-r49w-34wh 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 Multijob Plugin 662.vd2e0001f6b_b_d and earlier does not require POST requests for an HTTP endpoint, resulting in a cross-site request forgery (CSRF) vulnerability. This vulnerability allows attackers to resume failed Multijob builds. Multijob Plugin 669.v9d96a_d9c71b_0 requires POST requests for the affected HTTP endpoint.
O3 Security · Impact-Aware SCA

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Jenkins Multijob Plugin has a cross-site request forgery…