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Vulnerability · Published Feb 6, 2026 · Assigned by GitHub_M

CVE-2026-22254Winter Affected by Stored Cross-Site Scripting (XSS) in Asset Manager

None 0.0

In plain English

A cross-site scripting in winter from wintercms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)0.0None
Exploit odds (30 days)0.3%top 78.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Packagistwinter/wn-cms-module1.2.10GHSA-m7gw-rffq-rxjm

Affected products (as reported)

VendorProductVersions
wintercms winter < 1.2.10

Weakness: CWE-79, CWE-80 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:N

References