{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2026-125338","sourceIdentifier":"security-advisories@github.com","published":"2026-11-10T20:19:08.263","lastModified":"2026-11-10T20:19:08.263","vulnStatus":"Received","cveTags":[],"descriptions":[{"lang":"en","value":"Winter CMS is a content management system built on the Laravel PHP framework. Prior to 1.2.14, BrandSetting::renderCss() and EditorSetting::renderCss() store raw LESS compiler output with Cache::forever() but apply strip_tags() only to the value returned on a cache miss. The first render after saving custom CSS appears sanitized while priming an unsafe cache entry, and later cache hits return unsanitized output into the backend style element, allowing a user with backend.manage_branding or backend.manage_editor to cause stored cross-site scripting when another backend page renders the styles. The styles also appear on unauthenticated backend sign-in, password restore, and password reset layouts. This issue is fixed in version 1.2.14."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"wintercms","product":"winter","versions":[{"version":"\u003c 1.2.14","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N","baseScore":4.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":0.9,"impactScore":3.6}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-79"}]}],"references":[{"url":"https://github.com/wintercms/winter/commit/c95d780ab54f3a3f74a94ae1667bf12b3c549d5d","source":"security-advisories@github.com"},{"url":"https://github.com/wintercms/winter/releases/tag/v1.2.14","source":"security-advisories@github.com"},{"url":"https://github.com/wintercms/winter/security/advisories/GHSA-5cwr-5jxg-pcf6","source":"security-advisories@github.com"}]}}