Missing Encryption of Sensitive Data in Jenkins and Jenkins LTS - CVE-2026-53442
Published: June 22, 2026
Vulnerability identifier: #VU134994
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-53442
CWE-ID: CWE-311
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the affected application does not encrypt secrets from POST config.xml submissions before storing them in job configurations unencrypted in job config.xml files. A remote attacker can gain access to sensitive information on the system.
Affected software
Jenkins
Jenkins LTS
Jenkins LTS
How to mitigate CVE-2026-53442
Install updates from vendor's website.
Jenkins - update to 2.568
Jenkins LTS - update to 2.555.3
Jenkins LTS - update to 2.555.3