An issue was discovered in CMS Made Simple 2.2.8. In the module ModuleManager (in the file action.installmodule.php), it is possible to reach an unserialize call with untrusted input and achieve authenticated object injection by using the "install module" feature.
Severity
CVSS 3.1
8.8 high
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
1.6% chance of exploitation in the next 30 days; higher than 75% of CVEs (scores of 2026-10-31)