Information disclosure in Jenkins and Jenkins LTS - CVE-2026-27100
Published: February 19, 2026
Vulnerability identifier: #VU123070
CSH Severity: Medium
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-27100
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application within the Run Parameter values. A remote user can gain unauthorized access to sensitive information on the system.
Affected software
Jenkins
Jenkins LTS
Jenkins LTS
How to mitigate CVE-2026-27100
Install updates from vendor's website.
Jenkins - update to 2.551
Jenkins LTS - update to 2.541.2
Jenkins LTS - update to 2.541.2