CVE-2026-84654 Business logic in Jenkins
Attackers can modify global public static fields via form data binding, potentially altering Jenkins instance behavior and escalating privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-84654?
CVE-2026-84654 is a medium-severity vulnerability in Jenkins, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In Stapler 2107.v8dfcb_e8ed317 and earlier, except 2088.2093.vd7c3e58008a_6, included in Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, form data binding allows setting public static fields of the bound configuration object, allowing attackers who can submit configuration forms to modify public static fields of the configuration objects those forms are bound to, resulting in changes that apply globally to the Jenkins instance.
Weakness: CWE-472
Which versions are affected by CVE-2026-84654?
1 open source package ship an affected version, including jenkins.
| Package | Affected | Fixed in |
|---|---|---|
jenkins Bitnami | All versions | 2.568.3, 2.580.0 |
How do I fix CVE-2026-84654?
Upgrade jenkins to a fixed version for your release line: 2.568.3 or 2.580.0.
Is CVE-2026-84654 being exploited?
There is no known exploitation of CVE-2026-84654 in the wild and no public exploit code.
Sources
Also known as BIT-jenkins-2026-84654, GHSA-jrvc-6cvv-qqx5, MINI-2pfg-4jqg-cjf2, MINI-5949-vcf9-jqrm, MINI-7f8v-jwqv-h4mw, MINI-929j-6hgm-36pw and 3 more.