CVE-2026-22254CWE-79CWE-80

Winter Affected by Stored Cross-Site Scripting (XSS) in Asset Manager

published February 6, 2026

CVSS v3.1
0.0
EPSS
0%
Percentile
20.5
In the wild
Unconfirmed
What it is

Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. Versions of Winter CMS before 1.2.10 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. This vulnerability is fixed in 1.2.10.

The record
Technical detail
CVSS v3.1
0.0 · NONE
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00290 · 20.5th percentile
Weaknesses
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'); CWE-80 · Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Published
2026-02-06T19:11Z
EPSS history
Timeline
  • 06 FEB 19:11Z
    Winter Affected by Stored Cross-Site Scripting (XSS) in Asset Manager
    cvelistv5