Vbulletin vulnerabilities
Published CVEs affecting Vbulletin products: 3 record(s), with severity, exploitation and fixes.
CVE-2026-61511
Critical · 9.8
Public exploit CWE-95 Jul 27, 2026
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 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.
CVE-2020-17496
Critical · 9.8
KEV Urgent · 83 Public exploit CWE-74 Aug 12, 2020
vBulletin PHP Module Remote Code Execution Vulnerability
vBulletin 5.5.4 through 5.6.2 allows remote command execution via crafted subWidgets data in an ajax/render/widget_tabbedcontainer_tab_panel request. NOTE: this issue exists because of an incomplete fix for CVE-2019-16759.
CVE-2019-16759
Critical · 9.8
KEV Urgent · 83 Public exploit CWE-94 Sep 24, 2019
vBulletin PHP Module Remote Code Execution Vulnerability
vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.