Highlights
Access Control: 34 prior fixes. Scrutinize any change in this area.
contracts/LoopringProtocolImpl.sol: most-fixed (9 issues). Treat as high-risk during review.
89 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 Verification Bypass: Multiple high-severity fixes target zero-address signers, ambiguous dual-recovery, and inconsistent hashing, enabling authentication bypass and forgery.
Access Control: Critical fixes prevent unauthorized module addition, wallet factory changes, owner initialization, and proxy upgrades, indicating fundamental gaps in privileged operations.
Auth Bypass: Critical meta-transaction signer validation and module registration/enabled separation were missing, allowing unauthorized signers and disabled modules to be used.