Highlights
Auth Bypass: 1 prior fix. Scrutinize any change in this area.
src/form_urlencoded.rs: most-fixed (1 issue). 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.
Auth Bypass: Inconsistencies in host parsing and serialization allow hostnames to mutate during a parse-serialize-parse roundtrip. This enables attackers to craft hosts that bypass domain-based authorization and security controls when parsed by downstream systems.
Memory Safety: The use of performance-oriented unsafe indexing APIs (get_unchecked and get_unchecked_mut) during URL-decoded form parsing creates risks of out-of-bounds memory accesses if internal bounds assumptions are violated.