Highlights
Access Control: 20 prior fixes. Scrutinize any change in this area.
L1AssetRouter.sol: most-fixed (7 issues). Treat as high-risk during review.
31 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.
Access Control: Dominant vulnerability class (20 fixes) spanning multiple bridge components; failures allow unauthorized token operations, admin actions, or batch reverts.
Token Transfer Manipulation: Seven fixes address incorrect mint/burn values, missing allowance transfers, and assetInfo encoding collisions, enabling unauthorized token minting or burning.
Integer Overflow: Overflows in EVM emulation and nonce handling can lead to memory corruption or logic bypass; multiple fixes added bounds checks.