CVE-2026-125341 json
Winter CMS: Stored XSS through Backend List widget image columns
published 2mo ago modified yesterday also GHSA-7mpf-4465-7fc2 , EUVD-2026-122901
- cvss
- 2.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist winter/wn-backend-module 1.2.14
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- yesterday
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 2.0 | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N |
| GitHub | 3.1 | 2.0 | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | winter/wn-backend-module | >=1.1.0, <1.2.14 |
1.2.14 |
Affected products
- wintercms winter
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
Sources
- CVE List CVE-2026-125341
- GitHub Advisory GHSA-7mpf-4465-7fc2
- NVD CVE-2026-125341
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.