Medium (6.5) in jenkins github branch source. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in io.jenkins.plugins:gitlab-branch-source 688.v5fa.
Jenkins GitLab Branch Source Plugin 684.vea_fa_7c1e2fe3 and earlier unconditionally discovers projects that are shared with the configured owner group, allowing attackers to configure and share a project, resulting in a crafted Pipeline being built by Jenkins during the next scan of the group.
Severity
CVSS 3.1
6.5 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS
0.5% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-31)