CVE-2026-61511 — vBulletin < 6.2.2 Eval Injection RCE via vb5/template/runtime.php
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…
Published: 2026-07-27 · CVSS: 9.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7