CVE-2026-72702 Grav CMS before 2.0.16 Origin Validation Bypass via Referer

Grav CMS before 2.0.16 contains an origin validation bypass in the Uri::referrer and Pages::referrerRoute methods, which validate the Referer header using an unanchored string prefix match strstartswith$referrer, $base with no trailing delimiter. An attacker who controls a domain that begins with...