Merge pull request #6782 from Piccirello/strict-csp

Use less permissive Content Security Policy

src/webui/abstractwebapplication.cpp

@@ -110,7 +110,7 @@ Http::Response AbstractWebApplication::processRequest(const Http::Request &reque
     header(Http::HEADER_X_FRAME_OPTIONS, "SAMEORIGIN");
     header(Http::HEADER_X_XSS_PROTECTION, "1; mode=block");
     header(Http::HEADER_X_CONTENT_TYPE_OPTIONS, "nosniff");
-    header(Http::HEADER_CONTENT_SECURITY_POLICY, "default-src 'self' 'unsafe-inline' 'unsafe-eval';");
+    header(Http::HEADER_CONTENT_SECURITY_POLICY, "default-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; script-src 'self' 'unsafe-inline'; object-src 'none';");
 
     sessionInitialize();
     if (!sessionActive() && !isAuthNeeded())