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CVE-2026-43948— wger: cross-tenant password reset and plaintext disclosure via gym=None bypass

Quick assessment

Affected
wger-project wger
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

wger是wger Project开源的使用 Django 编写的自托管 FLOSS 健身/锻炼、营养和体重追踪器。 wger 2.6之前版本存在安全漏洞，该漏洞源于重置密码和权限编辑视图中的健身房范围授权检查使用Python对象比较，当攻击者和受害者均无健身房分配时绕过检查，可能导致账户接管。

CVSS 9.9 · Critical EPSS 0.44% · P36

Affected Version Matrix 1

VendorProduct Version RangeStatus
wger-project wger < 2.6 affected
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I. Basic Information for CVE-2026-43948

Vulnerability Information
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Vulnerability Title
wger: cross-tenant password reset and plaintext disclosure via gym=None bypass
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
wger 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
wger是wger Project开源的使用 Django 编写的自托管 FLOSS 健身/锻炼、营养和体重追踪器。 wger 2.6之前版本存在安全漏洞，该漏洞源于重置密码和权限编辑视图中的健身房范围授权检查使用Python对象比较，当攻击者和受害者均无健身房分配时绕过检查，可能导致账户接管。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wger-project wger < 2.6 -

II. Public POCs for CVE-2026-43948

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III. Intelligence Information for CVE-2026-43948

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Vendor Advisories for CVE-2026-43948 (1)

IV. Related Vulnerabilities

Same product: wger
Same vendor: wger-project
Same weakness: CWE-863

V. Comments for CVE-2026-43948

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