CVE-2026-53441 Jenkins: Stored XSS vulnerability in node offline cause description
Stored XSS in Jenkins allows attackers with Agent/Configure permission to execute scripts via unescaped offline cause descriptions.
- 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-2026-53441?
CVE-2026-53441 is a medium-severity cross-site scripting vulnerability in Jenkins Jenkins, published on 10 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Jenkins 2.483 through 2.567 (both inclusive), LTS 2.492.1 through 2.555.2 (both inclusive) does not escape the user-provided description of a generic offline cause that could be set through the `POST config.xml` API, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Agent/Configure permission.
Weakness: CWE-79
Which versions are affected by CVE-2026-53441?
3 open source packages ship an affected version, including org.jenkins-ci.main:jenkins-core and jenkins. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.main:jenkins-core Maven | From 2.483 | 2.568 |
org.jenkins-ci.main:jenkins-core Maven | From 2.483 | 2.568 |
jenkins Bitnami | From 2.483.0 | 2.555.3, 2.568.0 |
Products include Jenkins Jenkins.
How do I fix CVE-2026-53441?
Upgrade org.jenkins-ci.main:jenkins-core to 2.568 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-53441 being exploited?
There is no known exploitation of CVE-2026-53441 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-2026-53441, GHSA-93qh-vwrm-c5pw, MINI-584x-f66p-4hh7, MINI-7mmj-hm63-42xq, MINI-84pf-v7wv-7xr8, MINI-97qf-89fg-r8f3 and 3 more.