Code Injection in Jenkins and Jenkins LTS - CVE-2026-84645
Published: September 4, 2026
Vulnerability identifier: #VU146884
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84645
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper handling of user-submitted config.xml documents. A remote user can execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Jenkins
Jenkins LTS
Jenkins LTS
How to mitigate CVE-2026-84645
Install updates from vendor's website.
Jenkins - update to 2.580
Jenkins LTS - update to 2.568.3
Jenkins LTS - update to 2.568.3