Feed/CVE-2026-61511
CVE-2026-61511CRITICALCVSS 9.8

CVE-2026-61511

Published Jul 27, 2026ยทUpdated Aug 7, 2026

NVD Description

vBulletin 5.x through 5.7.5 and 6.x through 6.2.1 contains an eval injection vulnerability in the vB5_Template_Runtime::runMaths() method within the template runtime that allows unauthenticated remote attackers to execute arbitrary PHP code by supplying crafted input through the pagenav[pagenumber] parameter. Attackers can exploit the insufficiently restrictive regex filter by using phpfuck-style encoding with permitted characters to inject and execute arbitrary PHP code via the unauthenticated ajax/render template route without any authentication.

Public Exploits & PoCs4 found

[POC] CVE-2026-61511 โ€” CVE-2026-61511-PoC-Exploit

CVE-2026-61511 โ€“ vBulletin Pre-Auth RCE (CVSS 9.8). Vuln 5.x/6.x (unpatched). Multi-exploit via Endpoint Pool, AJAX, PHPFuck WAF bypass. Full toolkit: reverse shell, proxy, persistence, webshell, database operations, firewall control, log management, mass scanning. 2 versions: multi-exploit & safe-check. Python 3.8+ Use Ethically, Stay Legal. ๐Ÿ”’

3

[POC] CVE-2026-61511 โ€” Ultimate-CVE-2026-61511

vBulletin 5.x through 5.7.5 and 6.x through 6.2.1 contains an eval injection vulnerability in the vB5_Template_Runtime::runMaths() method within the template runtime that allows unauthenticated remote attackers to execute arbitrary PHP code

[POC] CVE-2026-61511 โ€” cve-2026-61511

cve-2026-61511

[POC] CVE-2026-61511 โ€” CVE-2026-61511

CVE-2026-61511 - Draft or Todo

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

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