Unspecified vulnerability in admin/sources/base/core.php in Invision Power Board (aka IPB or IP.Board) 3.1.x through 3.3.x has unknown impact and remote attack vectors.

Invision Power Services (IPS) Community Suite 4.1.19.2 and earlier has pre-auth reflected XSS in the IPS UTF8 Converter v1.1.18: admin/convertutf8/index.php?controller= is the attack vector. This UTF8 Converter vulnerability can easily be used to make a malicious announcement affecting any Invision Power Board user who views the announcement.

Invision Community (aka IPS Community Suite or IP-Board) before 4.6.5.1 allows reflected XSS because the filenames of uploaded files become predictable through a brute-force attack against the PHP mtrand function.

Stored XSS in Invision Power Board versions 3.3.1 - 3.4.8 leads to Remote Code Execution.

Invision Community (aka IPS Community Suite or IP-Board) before 4.6.5.1 allows stored XSS, with resultant code execution, because an uploaded file can be placed in an IFRAME element within user-generated content. For code execution, the attacker can rely on the ability of an admin to install widgets, disclosure of the admin session ID in a Referer header, and the ability of an admin to use the templating engine (e.g., Edit HTML).

Invision Power Board (IPB) 1.0 through 1.3 allows remote attackers to edit arbitrary forum posts via a direct request to index.php with modified parameters.

Invision Power Board (IPB) 1.0 through 2.0.4 allows non-root admins to add themselves or other users to the root admin group via the "Move users in this group to" screen.

Cross-site scripting (XSS) vulnerability in Invision Power Board 2.0.2 and earlier allows remote attackers to inject arbitrary web script or HTML via an HTTP POST request.