CVE-2026-73481
phpList before 3.7.0-RC5 fail to enforce CSRF token validation on the bounce rule deletion endpoint (bouncerules.php / bouncerule.php). The deletion is performed via a GET request (?page=bouncerules&del=N), and the central CSRF check (verifyCsrfGetToken) is invoked with enforce=false, so it only validates the token when a 'tk' parameter is present. A remote attacker can trick an authenticated administrator into loading a crafted URL (e.g., embedded in an image tag) to delete arbitrary bounce rules from the phplist_bounceregex table without a valid CSRF token.
Debilidad
phpList before 3.7.0-RC5 fail to enforce CSRF token validation on the bounce rule deletion endpoint (bouncerules.php / bouncerule.php). The deletion is performed via a GET request (?page=bouncerules&del=N), and the central CSRF check (verifyCsrfGetToken) is invoked with enforce=false, so it only validates the token when a 'tk' parameter is present. A remote attacker can trick an authenticated administrator into loading a crafted URL (e.g., embedded in an image tag) to delete arbitrary bounce rules from the phplist_bounceregex table without a valid CSRF token.
Referencias
- https://github.com/phpList/phplist3/commit/5159c3ed33a5674a8169472b50d146d97f630746
- https://github.com/phpList/phplist3/issues/1116
- https://github.com/phpList/phplist3/pull/1121
- https://github.com/phpList/phplist3/releases/tag/v3.7.0-RC5
- https://www.vulncheck.com/advisories/phplist-rc5-cross-site-request-forgery-via-bounce-rules
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