Low severity · published Feb 6, 2026
CVE-2026-22254
Winter Affected by Stored Cross-Site Scripting (XSS) in Asset Manager
3.5
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WI
winter · wintercms
< 1.2.10 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-22254
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-22254
Patch
https://github.com/wintercms/winter/commit/8a7f74b004fcd19721764fc63af0cdb339d9fb65
Product
https://github.com/wintercms/winter/releases/tag/v1.2.10
Patch
https://github.com/wintercms/winter/security/advisories/GHSA-m7gw-rffq-rxjm
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