phpscheduleit Booked Scheduler 2.7.5 allows arbitrary file upload via the Favicon field, leading to execution of arbitrary Web/custom-favicon.php PHP code, because Presenters/Admin/ManageThemePresenter.php does not ensure an image file extension.
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
13% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)