It was found in vanilla forums before 2.0.10 a potential linkbait vulnerability in dispatcher.

It was found in vanilla forums before 2.0.10 a cross-site scripting vulnerability where a filename could contain arbitrary code to execute on the client side.

index.php?p=/dashboard/settings/branding in Vanilla 2.6.3 allows stored XSS.

Vanilla Forums 2.0.17.1 through 2.0.17.5 has XSS in /vanilla/index.php via the p parameter.

An Access Control vulnerability exists in the Facebook, Twitter, and Embedded plugins in Vanilla Forums before 2.0.17.9.

An issue exists in Vanilla Forums before 2.0.17.9 due to the way cookies are handled.

In Vanilla before 2.6.4, a flaw exists within the getSingleIndex function of the AddonManager class. The issue results in a require call using a crafted type value, leading to Directory Traversal with File Inclusion. An attacker can leverage this vulnerability to execute code under the context of the web server.

Multiple stored XSS in Vanilla Forums before 2.5 allow remote attackers to inject arbitrary JavaScript code into any message on forum.

Vanilla before 2.5.5 and 2.6.x before 2.6.2 allows Remote Code Execution because authenticated administrators have a reachable call to unserialize in the Gdn_Format class.

Vanilla 2.6.x before 2.6.4 allows remote code execution.