CVE-2026-84653 Missing authorization in Jenkins
Attackers with Overall/Manage permission can modify restricted Appearance configuration options due to missing permission checks in Jenkins.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-84653?
CVE-2026-84653 is a low-severity missing authorization vulnerability in Jenkins Jenkins, published on 2 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Jenkins 2.421 through 2.579 (both inclusive), LTS 2.426.1 through 2.568.2 (both inclusive) does not correctly perform permission checks in the Appearance configuration page, allowing attackers with Overall/Manage permission to modify Appearance configuration options they should not have access to.
Weakness: CWE-862
Which versions are affected by CVE-2026-84653?
1 open source package ship an affected version, including jenkins. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
jenkins Bitnami | From 2.421.0 | 2.568.3, 2.580.0 |
Products include Jenkins Jenkins.
How do I fix CVE-2026-84653?
Upgrade jenkins to a fixed version for your release line: 2.568.3 or 2.580.0.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-84653 being exploited?
There is no known exploitation of CVE-2026-84653 in the wild and no public exploit code.
Other vulnerabilities in Jenkins Jenkins
- CVE-2024-23897 Jenkins Command Line Interface (CLI) Path Traversal
- CVE-2018-1000861 Jenkins Stapler Web Framework Deserialization of Untrusted Data
- CVE-2017-1000353 Jenkins Remote Code Execution
- CVE-2015-5317 Jenkins User Interface (UI) Information Disclosure
- CVE-2021-21690 Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins
Sources
Also known as BIT-jenkins-2026-84653, GHSA-r4vq-pcpc-w89c, MINI-gxqg-6cmj-pwmr, MINI-jvcg-5467-qrg9, MINI-jvrg-8997-5w69, MINI-jwmm-7v4q-3f2h and 3 more.