Highlights
Auth Bypass: 2 prior fixes. Scrutinize any change in this area.
BLSSignatureChecker.sol: most-fixed (1 issue). Treat as high-risk during review.
3 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: Missing allowlist check allowed unauthorized aggregator registration, bypassing operator-set restrictions.
Auth Bypass: Registration flow did not bind operator to an explicit signing key, enabling authorization bypass via key ambiguity.
Signature Verification Bypass: Lack of input length validation, unique quorum bitmap enforcement, sorted nonsigner pubkeys, and reference block checks allowed signature forgery.