In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled `config.xml` submission in a way that allows them to handle HTTP requests afterwards.
This can be used to impersonate any user and send HTTP requests on their behalf, up to and including use of the Script Console to run arbitrary code, or to read arbitrary files from the Jenkins controller.

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History

Wed, 10 Jun 2026 15:45:00 +0000

Type Values Removed Values Added
Title Jenkins Arbitrary Deserialization via Custom config.xml Enables Remote Code Execution
First Time appeared Jenkins Project
Jenkins Project jenkins
Weaknesses CWE-284
CWE-502
Vendors & Products Jenkins Project
Jenkins Project jenkins

Wed, 10 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Description In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled `config.xml` submission in a way that allows them to handle HTTP requests afterwards. This can be used to impersonate any user and send HTTP requests on their behalf, up to and including use of the Script Console to run arbitrary code, or to read arbitrary files from the Jenkins controller.
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cve-icon MITRE

Status: PUBLISHED

Assigner: jenkins

Published:

Updated: 2026-06-10T15:35:44.158Z

Reserved: 2026-06-09T14:26:44.788Z

Link: CVE-2026-53435

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-10T14:16:36.440

Modified: 2026-06-10T14:16:36.440

Link: CVE-2026-53435

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-10T15:30:15Z

Weaknesses