SSD Secure Disclosure Releases Public Exploit for Unpatched vBulletin RCE Flaw (Cve 2026 61511 Vbulletin Preauth Rce)

Summary

SSD Secure Disclosure released a technical analysis and public exploit demonstrating pre-authentication remote code execution in unpatched vBulletin servers.

Details

SSD Secure Disclosure has published a detailed technical analysis and a functional public proof-of-concept (PoC) exploit for a critical vulnerability in vBulletin.

Vulnerability Details

The vulnerability, tracked as Cve 2026 61511 Vbulletin Preauth Rce, allows remote, unauthenticated attackers to execute arbitrary code via unauthenticated HTTP requests. The flaw stems from insecure input handling that reaches PHP's eval() function.

Patch Status and Exposure

Although vBulletin issued patches (version 6.2.2) on July 1, self-hosted forum administrators who have not yet upgraded face an immediate and substantial risk of exploitation, as automated scanners can easily leverage the public exploit to compromise target servers.

Related Pages

• Cve 2026 61511 Vbulletin Preauth Rce\n- Public Exploit Released For Patched Vbulletin Pre Auth Code Execution Flaw Cve 2\n\nSources: raw/digests/Cyber-Digest-2026-07-28