GHSA-m7gw-rffq-rxjm

Suggest an improvement
Source
https://github.com/advisories/GHSA-m7gw-rffq-rxjm
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-m7gw-rffq-rxjm/GHSA-m7gw-rffq-rxjm.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-m7gw-rffq-rxjm
Aliases
Published
2026-02-04T21:32:39Z
Modified
2026-02-06T22:22:15Z
Severity
  • 0.0 (None) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:N CVSS Calculator
Summary
Winter CMS has Stored Cross-site Scripting (XSS) in Asset Manager
Details

Impact

Affected versions of Winter CMS allow users with access to the CMS Asset Manager were able to upload SVGs without automatic sanitization.

To actively exploit this security issue, an attacker would need access to the Backend with a user account with the following permission: cms.manage_assets

The Winter CMS maintainers strongly recommend that the cms.manage_assets permission only be reserved to trusted administrators and developers in general.

Patches

Sanitization of SVG assets is now applied automatically when uploading through the CMS Asset Manager.

This security issue has been fixed as of https://github.com/wintercms/winter/commit/8a7f74b004fcd19721764fc63af0cdb339d9fb65.

Workarounds

If users cannot upgrade, they may apply commit https://github.com/wintercms/winter/commit/8a7f74b004fcd19721764fc63af0cdb339d9fb65 to their Winter CMS installation manually to resolve this issue.

Database specific 
{
    "cwe_ids":  [
        "CWE-79"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-02-04T21:32:39Z",
    "nvd_published_at":  "2026-02-06T20:16:10Z",
    "severity":  "LOW"
}
References

Affected packages

Packagist / winter/wn-cms-module

Package

Name
winter/wn-cms-module
Purl
pkg:composer/winter/wn-cms-module

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.2.10

Affected versions

v1.*
v1.0.473
v1.0.474
v1.0.475
v1.1.2
v1.1.3
v1.1.4
v1.1.5
v1.1.6
v1.1.7
v1.1.8
v1.1.9
v1.1.10
v1.1.11
v1.2.0
v1.2.1
v1.2.2
v1.2.3
v1.2.4
v1.2.5
v1.2.6
v1.2.7
v1.2.8
v1.2.9

Database specific

last_known_affected_version_range 
"<= 1.2.9"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-m7gw-rffq-rxjm/GHSA-m7gw-rffq-rxjm.json"