Medium (5.4). EPSS 82% chance of exploitation in the next 30 days. Fixed in org.jenkins-ci.plugins:matrix-project 1.18.1, 1.20.
Jenkins Matrix Project Plugin 1.19 and earlier does not escape HTML metacharacters in node and label names, and label descriptions, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Agent/Configure permission.
Severity
CVSS 3.1
5.4 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS
82% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)