How severe is CVE-2026-9674?

CVE-2026-9674 has a CVSS score of 4.3/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2026-9674?

CVE-2026-9674 affects the following packages: org.jenkins-ci.plugins:jenkins-multijob-plugin (Maven). Ecosystems affected: Maven.

How do I fix CVE-2026-9674?

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 CVE-2026-9674 is resolved across your whole dependency graph.

How do I detect CVE-2026-9674 in my Maven dependencies?

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.

How do I mitigate CVE-2026-9674 if there is no patch (or I can't update yet)?

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.

Is CVE-2026-9674 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-9674 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-9674?

CVE-2026-9674 has an EPSS (Exploit Prediction Scoring System) score of 0.3%, placing it in the 15th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-9674?

CVE-2026-9674 is classified as Cross-Site Request Forgery (CSRF) (CWE-352). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2026-9674 published, and has it been updated?

CVE-2026-9674 was published on May 27, 2026 and was last updated on July 15, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

MEDIUM severity

CVE-2026-9674 — jenkins-multijob-plugin

MEDIUM

CVE-2026-9674 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.

Jenkins Multijob Plugin has a cross-site request forgery (CSRF) vulnerability

Also known asGHSA-hj3h-r49w-34wh

Published

May 27, 2026

Updated

Jul 15, 2026

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 CVE-2026-9674.

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

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

How urgent is this, really

CVE-2026-9674 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

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.jenkins-ci.plugins:jenkins-multijob-plugin`	all versions	669.v9d96a`org.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

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.
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 CVE-2026-9674 is resolved across your whole dependency graph.
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

Is CVE-2026-9674 in your dependencies?

Find it across Maven, including transitive dependencies.

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CVSS Score

4.3/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CWE Classification

CWE-352Cross-Site Request Forgery (CSRF)

Weaponization

No known public exploit tooling found.

Timeline

Disclosed

May 27, 2026

Last updated

Jul 15, 2026

Identifiers

CVE-2026-9674

GHSA-hj3h-r49w-34wh

References

Advisoryjenkins.io Advisorynvd.nist.gov Packagegithub.com

Related vulnerabilities

Also affects jenkins-multijob-plugin

This CVE is medium severity, in line with the other 1 CVE affecting jenkins-multijob-plugin.

CVE-2017-1000390

Same weakness: CWE-352

This CVE is medium severity; 7 of 7 other CVEs with CWE-352 are rated as high or higher (top: high).

CVE-2026-61593CVE-2026-59148CVE-2026-73222CVE-2026-73292CVE-2026-81890CVE-2026-19418CVE-2026-81888Browse all CWE-352

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedJul 15, 2026

CVE-2026-9674 — jenkins-multijob-plugin

Exploitation Status

No confirmed exploitation observed yet

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2026-9674 in your dependencies?