CVE-2026-76581: Improper Verification of Cryptographic Signature

The WPMU DEV Dashboard plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.0.1. This is due to inconsistent and ambiguous HMAC message construction between the unauthenticated wdpssostep1 and wdpssostep2 AJAX actions, where step 1 signs and disclose...