{"id":"CVE-2021-44618","details":"A Server-side Template Injection (SSTI) vulnerability exists in Nystudio107 Seomatic 3.4.12 in src/helpers/UrlHelper.php via the host header.","aliases":["GHSA-m3xv-x3ph-mq22"],"modified":"2026-07-09T05:45:38.089348Z","published":"2022-03-11T16:15:07.523Z","references":[{"type":"ADVISORY","url":"https://github.com/nystudio107/craft-seomatic/releases/tag/3.4.12"},{"type":"FIX","url":"https://github.com/nystudio107/craft-seomatic/commit/0c5c0c0e0cb61000d12ec55ebf174745a5bf6469"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nystudio107/craft-seomatic","events":[{"introduced":"9ad5d83ca24fe6f9bd1c4b34c3d60fe38a8dc132"},{"last_affected":"9ad5d83ca24fe6f9bd1c4b34c3d60fe38a8dc132"},{"fixed":"0c5c0c0e0cb61000d12ec55ebf174745a5bf6469"},{"fixed":"9ad5d83ca24fe6f9bd1c4b34c3d60fe38a8dc132"}],"database_specific":{"source":["CPE_STRING","REFERENCES"],"cpe":"cpe:2.3:a:nystudio107:seomatic:3.4.12:*:*:*:*:craft_cms:*:*","extracted_events":[{"introduced":"3.4.12"},{"last_affected":"3.4.12"}]}}],"versions":["3.4.12"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-44618.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}