Security Advisory

CVE-2026-43937

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-12 14:00:35

Last updated 2026-05-12 15:42:43

Assigner GitHub_M

CVSS score 8.8

State PUBLISHED

Description

YetAnotherForum.NET (YAF.NET) is a C# ASP.NET forum. Prior to 4.0.5, Any admin OnPost… handler executes its side effects before the ResultFilterAttribute rewrites the response to a 302 to /Info/4. The most impactful abuse is /Admin/RunSql, whose OnPostRunQuery binds Editor from the POST body and passes it straight to IDbAccess.RunSql with no caller check, yielding arbitrary SQL execution for any low-privileged user. This vulnerability is fixed in 4.0.5.

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