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Vulnerability record · CVE-2026-43948 · published 12 May 2026

CVE-2026-43948: Incorrect authorization vulnerability

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.

9.9 CVSS 3.1 Critical EPSS 0.44% · top 64.0% CWE-863 · Incorrect authorization Deferred
9.9CVSS 3.1 base score
0.44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

LinkTags
https://github.com/wger-project/wger/security/advisories/GHSA-mhc8-p3jx-84mm
https://github.com/wger-project/wger/security/advisories/GHSA-mhc8-p3jx-84mm

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Source: NIST National Vulnerability Database (record CVE-2026-43948), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.