VulnerabilityAnalyzed

CVE-2026-22254

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.

LOW 3.5EPSS 0.26%

Does this matter?

Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own.

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 3.1: 3.5 LOWCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N
EPSS: 0.26% probability · 18th percentile
CISA KEV: Not listed
Weakness: CWE-79, CWE-80
Affected: wintercms/winter
Source: security-advisories@github.com

References

https://github.com/wintercms/winter/commit/8a7f74b004fcd19721764fc63af0cdb339d9fb65Patch
https://github.com/wintercms/winter/releases/tag/v1.2.10Product, Release Notes
https://github.com/wintercms/winter/security/advisories/GHSA-m7gw-rffq-rxjmPatch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.