nmedia Simple User Registration

• CVE-2026-0844 High 8.8 Simple User Registration <= 6.7 - Authenticated (Subscriber+) Privilege Escalation via profile_save_field 0.3%
• CVE-2025-12160 High 7.2 Simple User Registration <= 6.6 - Unauthenticated Stored Cross-Site Scripting 0.2%
• CVE-2025-4334 Critical 9.8 Simple User Registration <= 6.3 - Unauthenticated Privilege Escalation 2.6%