Highlights
Input Validation: 3 prior fixes. Scrutinize any change in this area.
src/passes/externalInputChecker: 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.
Auth Bypass: Out-of-bounds enum arguments can bypass logical access controls and authorization checks if they are processed without strict runtime bound checking. Ensuring assertion checks are compiled into runtime code is essential to guarantee execution integrity.
Input Validation: Failure to generate runtime bit-width assertion wrappers on external integer parameters in Cairo allows potentially malicious or oversized integer values to bypass input sanitation and cause unexpected behavior in transpiled functions.
Input Validation: External inputs, including contract deployment/constructor parameters and public functions, must undergo strict range and type boundary validations (such as verifying booleans are 0 or 1 and enums are within valid ranges) to maintain contract invariants.