CVE-2026-43978

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 low-privileged user, the session flag trainer.identity is set and this flag alone bypasses the permission check on all subsequent trainer-login calls. This grants full gym administration capabilities including viewing all member data, modifying contracts, managing gym configuration, and accessing other trainers' and managers' personal information. This issue has been fixed in version 2.6.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/wger-project/wger/security/advisories/GHSA-9qpr-vc49-hqg2
https://github.com/wger-project/wger/security/advisories/GHSA-9qpr-vc49-hqg2

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-16 23:16

Updated : 2026-07-17 18:42

NVD link : CVE-2026-43978

Mitre link : CVE-2026-43978

CVE.ORG link : CVE-2026-43978

JSON object : View

Products Affected

No product.

CWE

CWE-269

Improper Privilege Management

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