{"action":"Upgrade winter/wn-backend-module to 1.2.14 or later.","affected":[{"fixed":"1.2.14","introduced":"0"}],"component":"winter/wn-backend-module","cve_ids":[],"ecosystem":"Packagist","exploited":false,"fixed_versions":["1.2.14"],"ghsa_id":"GHSA-5cwr-5jxg-pcf6","id":"tcs_01M5KEVZBEBWNSJYPVW756ZENP","modified_at":"2026-08-20T19:00:07.472769603Z","published_at":"2026-08-20T18:44:54Z","references":["https://osv.dev/vulnerability/GHSA-5cwr-5jxg-pcf6","https://github.com/wintercms/winter/security/advisories/GHSA-5cwr-5jxg-pcf6","https://github.com/wintercms/winter/commit/c95d780ab54f3a3f74a94ae1667bf12b3c549d5d","https://github.com/wintercms/winter","https://github.com/wintercms/winter/releases/tag/v1.2.14"],"severity":{"label":"medium","score":4.5},"sources":[{"source":"osv","source_id":"GHSA-5cwr-5jxg-pcf6","url":"https://osv.dev/vulnerability/GHSA-5cwr-5jxg-pcf6"}],"summary":"Winter: Stored XSS through cached Brand Settings and Editor Settings custom styles"}