CVE-2026-72702 | BDVDB-2026-364409 Detail

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.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12026-08-25Record published in the CVE List.
2. Version 22026-10-08Most recent update recorded in the CVE List.