Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, read access to site, user and role information is not gated by permissions. This issue has been patched in versions 4.9.0 and 5.4.0.
Exploitability
AV:NAC:LAT:NPR:LUI:NVulnerable System
VC:HVI:NVA:NSubsequent System
SC:NSI:NSA:N7.1/CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NAccess Control