vBulletin fixes critical pre-auth RCE flaw with public exploit
A critical vulnerability in the vBulletin forum software allows unauthenticated attackers to execute arbitrary PHP code through template rendering. The security issue is tracked as CVE-2026-61511 and affects vBulletin versions in the 5.x and 6.x branches up to 5.7.5 and 6.2.1, respectively. vBulletin is a PHP-based proprietary forum platform released…
bubmagJuly 28, 2026