Incorrect authorization in wger - CVE-2026-43976
Published: October 5, 2026
Vulnerability identifier: #VU153254
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-43976
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose private administrative notes, uploaded documents, gym contracts, user configuration data, and user permission data for other unaffiliated users.
The vulnerability exists due to incorrect authorization in the gym management views when handling requests for a user whose gym assignment is unset. A remote user can request affected endpoints with an attacker-supplied member identifier to disclose private user data.
Exploitation requires the gym.gym_trainer and gym.add_adminusernote permissions, and both the requester and target user must have no gym assignment.
Affected software
wger
How to mitigate CVE-2026-43976
Install security update from vendor's website.
wger - update to 2.6