CVE-2026-43948 Details
Description
wger is a free, open-source workout and fitness manager. Prior to 2.6, the reset_user_password and gym_permissions_user_edit views in wger perform a gym-scope authorization check using Python object comparison (!=) that evaluates None != None as False, silently bypassing the guard when both the attacker and victim have no gym assignment (gym=None). A user with gym.manage_gym permission and gym=None can reset the password of any other gym=None user; the new plaintext password is returned verbatim in the HTML response body, enabling one-shot full account takeover. The victim's original password is invalidated, locking them out permanently. This vulnerability is fixed in 2.6.
A critical vulnerability in wger workout and fitness manager, affecting versions through 2.5.0, allows for unauthorized password resets and account takeovers. The issue arises in the 'reset_user_password' and 'gym_permissions_user_edit' views, where gym-scope authorization checks incorrectly evaluate 'None' values. This flaw enables users with 'gym.manage_gym' permission and no gym assignment to reset the passwords of other users with the same gym status. The new plaintext password is disclosed in the response, facilitating immediate account access while locking out the original user by invalidating their password.
Users are advised to update to wger version 2.6 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 12, 2026CISA-ADP
Assessed May 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/wger-project/wger/security/advisories/GHSA-mhc8-p3jx-84mm | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/wger-project/wger/security/advisories/GHSA-mhc8-p3jx-84mm | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-863 | Incorrect Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wger | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 13, 2026 | CVE Modified | CISA-ADP |
| May 12, 2026 | New CVE Received | [email protected] |