CVE-2023-52083: Wintercms Winter

Medium severity, CVSS 4.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Winter is a free, open-source content management system. Prior to 1.2.4, users with the `media.manage_media` permission can upload files to the Media Manager and rename them after uploading. Previously, media manager files were only sanitized on upload, not on renaming, which could have allowed a stored XSS attack. This issue has been patched in v1.2.4.

Affected products

• Wintercms Winter: before 1.2.4 (fixed in 1.2.4)

Published 2023-12-28. Last modified 2026-06-17.