Highlights
Signature Replay: 4 prior fixes. Scrutinize any change in this area.
contracts/CollateralVault.sol: most-fixed (3 issues). Treat as high-risk during review.
4 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.
Signature Replay: Multiple fixes addressed replay: front-running via try-catch and EIP-712 binding. Signed allowance modifications remain a high-risk path if not fully context-bound.
Signature Replay: Per-operation nonces and cancellation were added, but any new signature-based operation must reuse the nonce mechanism to avoid cross-operation replay.
Signature Replay: Deposit approval signature with exact amount was added to prevent front-running; sibling allowance-modification signatures need equivalent protection.