CVE-2026-53441: Vulnerability in Jenkins Project Jenkins
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.
AI Analysis
Technical Summary
A stored XSS vulnerability exists in Jenkins versions 2.483 to 2.567 and LTS versions 2.492.1 to 2.555.2 due to improper escaping of user-supplied descriptions for generic offline causes configured through the POST config.xml API. Attackers with Agent/Configure permission can exploit this to inject malicious scripts. The vulnerability is tracked as CVE-2026-53441 and is categorized under CWE-79 (Improper Neutralization of Input During Web Page Generation). No official patch or remediation level has been provided yet.
Potential Impact
Successful exploitation allows an attacker with Agent/Configure permission to execute stored cross-site scripting attacks, potentially leading to limited confidentiality and integrity impacts within the Jenkins environment. There is no impact on availability. The vulnerability requires authenticated access with specific permissions, limiting the attack surface.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict Agent/Configure permissions to trusted users only and monitor for suspicious activity related to configuration changes. Avoid exposing the POST config.xml API to untrusted users.
CVE-2026-53441: Vulnerability in Jenkins Project Jenkins
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.
CVSS v3.1
Score 5.4medium
Affected software
pkg:github/jenkinsci/jenkinsRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
A stored XSS vulnerability exists in Jenkins versions 2.483 to 2.567 and LTS versions 2.492.1 to 2.555.2 due to improper escaping of user-supplied descriptions for generic offline causes configured through the POST config.xml API. Attackers with Agent/Configure permission can exploit this to inject malicious scripts. The vulnerability is tracked as CVE-2026-53441 and is categorized under CWE-79 (Improper Neutralization of Input During Web Page Generation). No official patch or remediation level has been provided yet.
Potential Impact
Successful exploitation allows an attacker with Agent/Configure permission to execute stored cross-site scripting attacks, potentially leading to limited confidentiality and integrity impacts within the Jenkins environment. There is no impact on availability. The vulnerability requires authenticated access with specific permissions, limiting the attack surface.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict Agent/Configure permissions to trusted users only and monitor for suspicious activity related to configuration changes. Avoid exposing the POST config.xml API to untrusted users.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- jenkins
- Date Reserved
- 2026-06-09T14:26:44.789Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2967b6c9170919df1fdd4f
Added to database: 06/10/2026, 13:33:42 UTC
Last enriched: 07/06/2026, 21:19:17 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 119
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