CVE-2026-43939

YetAnotherForum.NET YAF.NET is a C ASP.NET forum. Prior to 4.0.5 and 3.2.12, the thread posting and reply feature accepts user-supplied content via a a post or reply that is stored server-side and later rendered back into the thread page without adequate HTML sanitization or contextual output...

CVE-2026-43937

Summary: CVE-2026-43937 affects YetAnotherForum.NET (YAF.NET) prior to 4.0.5. An admin handler (OnPost… in /Admin/RunSql) can bypass authorization due to PageSecurityCheckAttribute executing after the handler, allowing arbitrary SQL execution via IDbAccess.RunSql when a low-privileged user posts ...