CVE-2026-43978 wger: Privilege escalation via trainer-login session chaining allows gym trainers to impersonate gym managers

wger is a free, open-source workout and fitness manager. In versions prior to 2.6, a gym trainer can escalate their session to any higher-privileged account gym manager, general manager by chaining two calls to the trainer-login endpoint. Once a trainer performs a legitimate switch into a...

CVE-2026-43978 wger: Privilege escalation via trainer-login session chaining allows gym trainers to impersonate gym managers

wger is a free, open-source workout and fitness manager. In versions prior to 2.6, a gym trainer can escalate their session to any higher-privileged account gym manager, general manager by chaining two calls to the trainer-login endpoint. Once a trainer performs a legitimate switch into a...

Improper Privilege Management

Overview Affected versions of this package are vulnerable to Improper Privilege Management in the trainer-login process. An attacker can gain unauthorized access to higher-privileged accounts by chaining session states and bypassing permission checks. Remediation There is no fixed version for wge...

GHSA-9QPR-VC49-HQG2 wger: Privilege escalation via trainer-login session chaining allows gym trainer to impersonate gym manager

Summary A gym trainer can escalate their session to any higher-privileged account gym manager, general manager by chaining two calls to the trainer-login endpoint. Once a trainer performs a legitimate switch into a low-privileged user, the session flag trainer.identity is set and this flag alone...