# CVE-2026-9674: Jenkins Multijob Plugin has a cross-site request forgery (CSRF) vulnerability

> Attackers can force victims to resume failed Multijob builds via CSRF, requiring Jenkins administrators to update the plugin.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 27 May 2026
- **Updated:** 27 May 2026
- **Also known as:** GHSA-hj3h-r49w-34wh

## What is CVE-2026-9674?

CVE-2026-9674 is a medium-severity vulnerability in Jenkins Multijob Plugin, published on 27 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A cross-site request forgery (CSRF) vulnerability in Jenkins Multijob Plugin 662.vd2e0001f6b_b_d and earlier allows attackers to resume failed Multijob builds.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2026-9674?

2 open source packages ship an affected version, including org.jenkins-ci.plugins:jenkins-multijob-plugin. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.jenkins-ci.plugins:jenkins-multijob-plugin` | Maven | All versions | 669.v9d96a |
| `org.jenkins-ci.plugins:jenkins-multijob-plugin` | Maven | All versions | 669.v9d96a |

Products: Jenkins Multijob.

## How do I fix CVE-2026-9674?

Upgrade org.jenkins-ci.plugins:jenkins-multijob-plugin to 669.v9d96a or later.

## Is CVE-2026-9674 being exploited?

There is no known exploitation of CVE-2026-9674 in the wild and no public exploit code.

## Other vulnerabilities in Jenkins Multijob Plugin

- [CVE-2017-1000390](https://insights.sbomify.com/CVE-2017-1000390/): Jenkins Multijob plugin did not check permissions in the Resume Build action (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-9674 and fix it if it is affected.

What it is: CVE-2026-9674 is a medium-severity vulnerability in Jenkins Multijob Plugin, published on 27 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-9674 in the wild and no public exploit code.

Affected packages and fixed versions:
- org.jenkins-ci.plugins:jenkins-multijob-plugin (Maven): affected all versions; fixed in 669.v9d96a
- org.jenkins-ci.plugins:jenkins-multijob-plugin (Maven): affected all versions; fixed in 669.v9d96a

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-9674/ (Markdown: https://insights.sbomify.com/CVE-2026-9674/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-9674
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-9674
- OSV: https://osv.dev/vulnerability/CVE-2026-9674

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-9674/
Summaries are generated and may contain mistakes; the official description above is the record.