CVE-2023-27898: Jenkins

Critical severity, CVSS 9.6. EPSS: 1.8% chance of exploitation in the next 30 days.

Jenkins 2.270 through 2.393 (both inclusive), LTS 2.277.1 through 2.375.3 (both inclusive) does not escape the Jenkins version a plugin depends on when rendering the error message stating its incompatibility with the current version of Jenkins, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to provide plugins to the configured update sites and have this message shown by Jenkins instances.

Affected products

• Jenkins Jenkins: from 2.270, before 2.394 (fixed in 2.394); from 2.277.1, before 2.375.4 (fixed in 2.375.4)

Published 2023-03-10. Last modified 2026-06-17.