CVE-2026-40474: Wger

High severity, CVSS 7.6. EPSS: 0.4% chance of exploitation in the next 30 days.

wger is a free, open-source workout and fitness manager. In versions 2.5 and below, the GymConfigUpdateView declares permission_required = 'config.change_gymconfig' but inherits WgerFormMixin instead of WgerPermissionMixin, so the permission is never enforced at runtime. Since GymConfig is an ownerless singleton, any authenticated user can modify the global gym configuration, triggering save() side effects that bulk-update user profile gym assignments — a vertical privilege escalation to installation-wide configuration control. This issue is fixed in version 2.5.

Affected products

• Wger Wger: before 2.5 (fixed in 2.5)

Published 2026-04-17. Last modified 2026-06-17.