static void vnc_client_cache_auth(VncState *client)
{
    if (!client->info) {
        return;
    }

#ifdef CONFIG_VNC_TLS
    if (client->tls.session &&
        client->tls.dname) {
        client->info->has_x509_dname = true;
        client->info->x509_dname = g_strdup(client->tls.dname);
    }
#endif
#ifdef CONFIG_VNC_SASL
    if (client->sasl.conn &&
        client->sasl.username) {
        client->info->has_sasl_username = true;
        client->info->sasl_username = g_strdup(client->sasl.username);
    }
#endif
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.