CVE-2026-86254

wger versions through master contain an incomplete authorization bypass in wger/core/views/user.py where three views retain the original gym-scope check using raw integer comparison instead of the is_same_gym() helper, allowing gym staff with gym=None to delete, deactivate, or activate any other user with gym=None. Attackers with gym.manage_gym permission and gym=None affiliation can permanently delete user accounts, lock users out via deactivation, or undo defensive deactivations by exploiting the None != None comparison edge case.

• https://github.com/wger-project/wger/security/advisories/GHSA-mw8f-w6p8-xrf4
• https://www.vulncheck.com/advisories/wger-incomplete-authorization-fix-cross-tenant-account-deletion