Highlights
Auth Bypass: 5 prior fixes. Scrutinize any change in this area.
main.py: most-fixed (5 issues). Treat as high-risk during review.
8 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: Weak authorization checks and incomplete gating during registration and administration tasks have allowed bypasses. Decorators like admin_required, robust email verification gates, and secure session configurations are needed to secure these routes.
Cross-Site Scripting (XSS): Unescaped interpolation of user content and unsafe DOM manipulation (using innerHTML) in message lists previously allowed arbitrary script execution via crafted message bodies and link previews.
Auth Bypass: The webhook processing logic for the Paystack payment gateway was integrated without signature validation, which could allow arbitrary clients to trigger premium upgrades without authorization.