Highlights
Insecure Randomness: 2 prior fixes. Scrutinize any change in this area.
Str.php: most-fixed (2 issues). Treat as high-risk during review.
2 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.
Insecure Randomness: The helper class relied on openssl_random_pseudo_bytes without verifying cryptographically strong generation, which can lead to predictable session tokens or password reset hashes in older PHP environments. The fix enforces a secure random_bytes polyfill.
Timing Attack: User authentication or signature verification operations are susceptible to timeless timing attacks if execution time varies based on the validity of inputs. The Timebox class was introduced to enforce a strict minimum execution threshold.