Public Exploit Released for Patched vBulletin Pre-Auth Code Execution Flaw

A public exploit for CVE-2026-61511, an unauthenticated remote code execution flaw in vBulletin's template engine, was released on 27 July 2026, nearly four weeks after vBulletin issued patches in late June. The vulnerability affects vBulletin 6.2.1 and earlier versions; no active exploitation has been confirmed as of the disclosure date.

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