CVE-2026-125341
Winter CMS: Stored XSS through Backend List widget image columns
Winter CMS is a content management system built on the Laravel PHP framework. From 1.1.0 until 1.2.14, Backend\Widgets\Lists::evalImageTypeValue() interpolates the result of ImageResizer::filterGetUrl() into a single-quoted image source attribute without escaping it. In a third-party plugin that renders an attacker-influenced value through an image list column, an unsupported image value is returned verbatim, can break out of the attribute, and can inject event handlers that execute when a backend user views the list. Winter core ships no image list column, so a default installation is unaffected. This issue is fixed in version 1.2.14.
Fixes and workarounds
Fix
winter/wn-backend-module (Packagist): OSV reports a fixed version 1.2.14. Check the advisory for supported release branches.
Source: OSV GHSA-7mpf-4465-7fc2Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| winter wintercms |
>= 1.1.0, < 1.2.14 (affected) | CNA: GitHub_M |
winter/wn-backend-modulewinter/wn-backend-module
Packagist |
v1.1.10 (affected, Packagist) v1.1.11 (affected, Packagist) v1.1.2 (affected, Packagist) v1.1.3 (affected, Packagist) v1.1.4 (affected, Packagist) v1.1.5 (affected, Packagist) v1.1.6 (affected, Packagist) v1.1.7 (affected, Packagist) v1.1.8 (affected, Packagist) v1.1.9 (affected, Packagist) v1.2.0 (affected, Packagist) v1.2.1 (affected, Packagist) v1.2.10 (affected, Packagist) v1.2.11 (affected, Packagist) v1.2.12 (affected, Packagist) v1.2.13 (affected, Packagist) v1.2.2 (affected, Packagist) v1.2.3 (affected, Packagist) v1.2.4 (affected, Packagist) v1.2.5 (affected, Packagist) v1.2.6 (affected, Packagist) v1.2.7 (affected, Packagist) v1.2.8 (affected, Packagist) v1.2.9 (affected, Packagist) Ecosystem version events: introduced 1.1.0; fixed 1.2.14 Source events (ECOSYSTEM)Other versions: unaffected |
OSV GHSA-7mpf-4465-7fc2 |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 2.0 low |
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N | CNA: GitHub_M |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/wintercms/winter/security/advisories/GHSA-7mpf-4465-7fc2CNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/wintercms/winter/commit/0941c9816181095fe35d58e78e6d0c4a49238967CNA: GitHub_M · x_refsource_MISC
- https://github.com/wintercms/winter/releases/tag/v1.2.14CNA: GitHub_M · x_refsource_MISC
- https://github.com/advisories/GHSA-7mpf-4465-7fc2OSV / GitHub Security Advisories · advisory
- https://osv.dev/vulnerability/GHSA-7mpf-4465-7fc2OSV / GitHub Security Advisories · osv
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