Muucmf CVE-2026-4846

Immediate action is necessary given the lack of vendor response. First, contact dameng100 directly through alternative channels (phone, partner support) to inquire about patch availability or a timeline for a security release. In the interim, implement network-level protections: restrict administrative access to the muucmf management console to trusted IP ranges using a firewall or reverse proxy, enforce HTTPS with HSTS and Certificate Pinning to prevent man-in-the-middle attacks that might deliver the XSS payload, and disable or rename the vulnerable autoReply.html endpoint if not actively used. Second, apply input validation at the application level by implementing strict whitelist-based filtering on the 'keyword' parameter (alphanumeric characters only, no special HTML/JavaScript characters) and output encoding (HTML entity encoding) for all reflections. Third, deploy a Web Application Firewall (WAF) rule to block requests containing common XSS payloads (script tags, event handlers). Finally, audit logs for exploitation attempts and monitor administrative accounts for unauthorized activity. If a patch is eventually released, prioritize immediate deployment.