Advisories for Nuget/YAFNET.Core package

Issue Details: YAFNET's only admin authorization gate is PageSecurityCheckAttribute, implemented as a ResultFilterAttribute that runs after the page handler completes rather than before it. No other gate exists. Any admin OnPost… handler therefore executes its side effects before the filter 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 …

Description: Stored (second-order) Cross-Site Scripting (XSS) occurs when attacker-controlled input is persisted through one component of an application and later rendered, without proper sanitization or contextual output encoding, by a completely different component — often one that implicitly trusts the stored data. Because the dangerous sink is typically a privileged administrative interface, the payload executes in the browser of a high-value user (such as an administrator) and inherits their authenticated …

Description: Stored Cross-Site Scripting (XSS) occurs when user-supplied input is persisted by the application and later rendered in another user's browser without proper sanitization or contextual output encoding. When the vulnerable sink is a high-traffic surface such as a public forum thread, the payload executes in the browser of every user who visits the page, maximizing both reach and impact. Any JavaScript injected through such a sink runs under the …