Highlights
Auth Bypass: 1 prior fix. Scrutinize any change in this area.
lib/wfu_admin.php: most-fixed (2 issues). Treat as high-risk during review.
3 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Auth Bypass: Unauthenticated users could modify critical database configurations due to a lack of authorization and nonce validation inside the AJAX dispatch routines, which write directly to wordpress options.
Path Traversal: The application permitted arbitrary file reading/downloading via input paths to the download handler when canonicalization and prefix constraints were absent.
CSRF: Administrative configuration updating and shortcode manipulation were vulnerable to cross-site request forgery because of absent or insufficiently-scoped anti-CSRF nonce tokens.