{"id":"CVE-2021-41750","details":"A cross-site scripting (XSS) vulnerability in the SEOmatic plugin 3.4.10 for Craft CMS 3 allows remote attackers to inject arbitrary web script via a GET to /index.php?action=seomatic/file/seo-file-link with url parameter containing the base64 encoded URL of a malicious web page / file and fileName parameter containing an arbitrary filename with the intended content-type to be rendered in the user's browser as the extension.","aliases":["GHSA-6hjc-m38h-7jhh"],"modified":"2026-05-15T12:04:21.250249956Z","published":"2022-06-12T12:15:07.910Z","database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/nystudio107/craft-seomatic/blob/develop/CHANGELOG.md"},{"type":"FIX","url":"https://github.com/nystudio107/craft-seomatic/commit/4e46b792ce973ac0c652fb330055f41aca1981c8"},{"type":"FIX","url":"https://github.com/nystudio107/craft-seomatic/commit/5f2cdc7c39e0a4bfb60d2f84131508f0a87b2873"}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}