CVE-2026-126061 Winter CMS: My Account preview exposes another backend user's profile by record ID
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-126061?
CVE-2026-126061 is a medium-severity vulnerability in wintercms winter, published on 10 Nov 2026.
Official description
Winter CMS is a content management system built on the Laravel PHP framework. From 1.2.13 until 1.2.14, the Backend\Controllers\MyAccount controller inherits the FormController actions create, update, and preview while declaring an empty $requiredPermissions array, and formFindModelObject() resolves a caller-supplied record identifier through an unscoped Backend\Models\User query. Any authenticated backend user can request another sequential user identifier through /backend/backend/myaccount/preview/{other_user_id} or the inherited update action and read profile data including name, login, email, avatar, role, group membership, superuser status, and throttle state. Password material is not exposed, and existing model authorization guards block cross-user writes. This issue is fixed in version 1.2.14.
Weakness: CWE-639
Which versions are affected by CVE-2026-126061?
1 open source package ship an affected version, including winter/wn-backend-module.
| Package | Affected | Fixed in |
|---|---|---|
winter/wn-backend-module Packagist | From 1.2.13 | 1.2.14 |
How do I fix CVE-2026-126061?
Upgrade winter/wn-backend-module to 1.2.14 or later.
Is CVE-2026-126061 being exploited?
There is no known exploitation of CVE-2026-126061 in the wild and no public exploit code.
Sources
Also known as GHSA-mpmw-f6h6-3g26.