wger-project wger up to 2.5 Response Body reset_user_password/gym_permissions_user_edit authorization

Summaryinfo

A vulnerability, which was classified as critical, has been found in wger-project wger up to 2.5. The affected element is the function reset_user_password/gym_permissions_user_edit of the component Response Body Handler. The manipulation leads to authorization. This vulnerability is listed as CVE-2026-43948. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in wger-project wger up to 2.5. This issue affects the function reset_user_password/gym_permissions_user_edit of the component Response Body Handler. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-43948 since 05/04/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available.

Upgrading to version 2.6 eliminates this vulnerability.

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Productinfo

Type

• Project Management Software

Vendor

• wger-project

Name

• wger

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5

Website

• Product: https://github.com/wger-project/wger/

CPE 2.3info

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CPE 2.2info

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