{"id":"CVE-2026-72702","revision":"cea7a0e60c0c43e7a8d1bd5b28fe3250","records":[{"revision":"cea7a0e60c0c43e7a8d1bd5b28fe3250","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72702","aliases":[],"title":"Grav CMS before 2.0.16 Origin Validation Bypass via Referer","description":"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 (str_starts_with($referrer, $base)) with no trailing delimiter. An attacker who controls a domain that begins with the victim site's origin (e.g. https://example.com.attacker.tld) can send a request with such a Referer to be treated as same-origin, bypassing the Referer-based origin check.","state":0,"publishedAt":"2026-08-25T01:30:25.032+00:00","modifiedAt":"2026-10-08T15:24:25.006+00:00","affected":[{"ecosystem":"Vendor product","name":"grav","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"getgrav\",\n                    \"product\": \"grav\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"2.0.16\"\n                        },\n                        {\n                            \"version\": \"2.0.16\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:composer/getgrav/grav\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.3,"severity":"CRITICAL"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","score":5.4,"severity":"MEDIUM"}],"references":["https://github.com/getgrav/grav/security/advisories/GHSA-9ccq-2jfg-qw33","https://www.vulncheck.com/advisories/grav-cms-before-origin-validation-bypass-via-referer"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72702","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72702","identifiers":["CVE-2026-72702"]},"retained":false,"historicalAffected":[]}],"coverage":[]}