Highlights
Auth Bypass: 8 prior fixes. Scrutinize any change in this area.
app/controllers/passwords_controller.rb: most-fixed (6 issues). Treat as high-risk during review.
18 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: Multiple fixes address missing or inconsistent ownership/authentication checks on push operations, including nil==nil bypass and unauthenticated deletion. Centralized owned_by? and deletable_by? are critical to prevent unauthorized access.
CSP Bypass: Repeated CSP hardening removed unsafe-inline/unsafe-eval, added nonces, and fixed predictable nonce generation. Weak CSP allows script injection and XSS.
Information Disclosure: Secrets (payload, passphrase, note) leaked via logs, JSON responses, and URL existence. Filtering and response sanitization are essential.