SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions. Prior to 0.261.029, POST /api/groupdocuments/upload stores an attacker-controlled group document filename that groupworkspaces.html later interpolates into inline Share event handlers. The escapeGroupHtml function leaves apostrophes unchanged, while escapeHtml produces an HTML entity that the browser decodes before JavaScript evaluation, so either path permits the filename to terminate the handler string. An authenticated group Owner, Admin, or DocumentManager can persist script that executes in the SimpleChat origin when another group member clicks Share, allowing access to victim-visible data and actions with the victim session. This issue is fixed in version 0.261.029.

SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions. Prior to 0.241.203, the authenticated GET /api/user/info/<userid> and GET /api/user/profile-image/<userid> endpoints in application/singleapp/routebackendusers.py accepted a caller-supplied userid and read the matching Cosmos DB user-settings document without object-level authorization, allowing a low-privilege authenticated user to retrieve another user's email address, display name, and profile image. This issue is fixed in version 0.241.203.

Static code injection vulnerability in chatpanel.php in the SimpleChat 1.0.0 module for iWare Professional CMS allows remote attackers to inject arbitrary PHP code into chatlog.php via the msg parameter.