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.

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 before 2.6.1 allows XSS via the email field of a profile.

The from method in library/core/class.email.php in Vanilla Forums before 2.3.1 allows remote attackers to spoof the email domain in sent messages and potentially obtain sensitive information via a crafted HTTP Host header, as demonstrated by a password reset request.

Multiple cross-site scripting (XSS) vulnerabilities in Vanilla Forums before 2.0.18.13 and 2.1.x before 2.1.1 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Unspecified vulnerability in the update check in Vanilla Forums before 2.0.18.8 has unspecified impact and remote attack vectors, related to "object injection."

Multiple SQL injection vulnerabilities in Vanilla Forums before 2.0.18.8 allow remote attackers to execute arbitrary SQL commands via the parameter name in the Form/Email array to (1) entry/signin or (2) entry/passwordrequest.

The edit-profile page in Vanilla Forums before 2.1a32 allows remote authenticated users to modify arbitrary profile settings by replacing the UserID value during a man-in-the-middle attack, related to a "parameter manipulation" issue.

The cookie implementation in Vanilla Forums before 2.0.17.6 makes it easier for remote attackers to spoof signed requests, and consequently obtain access to arbitrary user accounts, via HMAC timing attacks.

Cross-site scripting (XSS) vulnerability in Vanilla Forums before 2.0.17.6 allows remote attackers to inject arbitrary web script or HTML via the p parameter to an unspecified component, a different vulnerability than CVE-2011-0526.

Open redirect vulnerability in Vanilla Forums before 2.0.17.6 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the Target parameter to an unspecified component, a different vulnerability than CVE-2011-0526.

Cross-site scripting (XSS) vulnerability in index.php in Vanilla Forums before 2.0.17 allows remote attackers to inject arbitrary web script or HTML via the Target parameter in a /entry/signin action.