Manual Review

A thorough line-by-line review was conducted on the codebase to identify potential malfunctions and vulnerabilities in the reward token staking mechanism interfacing with Convex Finance.

As the project at hand implements a reward token staking mechanism integrating with an external protocol, intricate care was put into ensuring that the flow of funds within the system conforms to the specifications and restrictions laid forth within both the external and local protocol specifications.

We validated that all state transitions of the system occur within sane criteria and that all rudimentary formulas within the system execute as expected. We pinpointed a major vulnerability arising from improper upgrade-ability within the system which could have had severe ramifications to its overall operation, however, it was conveyed ahead of time to the Congruent team to be promptly remediated.

Additionally, the system was investigated for any other commonly present attack vectors such as re-entrancy attacks, mathematical truncations, logical flaws and ERC / EIP standard inconsistencies. The documentation of the project was satisfactory to the extent it need be.

A total of 11 findings were identified over the course of the manual review of which 9 findings concerned the behaviour and security of the system. The non-security related findings, such as optimizations, are included in the separate Code Style chapter.

The finding table below enumerates all these security / behavioural findings:

ID	Severity	Addressed	Title
MCF-01M			Inexistent Validation of Minted Amount
MCF-02M			Inexistent Update of Existing Pools
MCF-03M			Overly Centralized Operator Control
MCF-04M			Inexistent Initialization of UUPS Dependency
RDR-01M			Inexistent Initialization of UUPS Dependency
CRV-01M			Centralized Token Ownership
CRV-02M			Inexistent Validation of Mint Operation
CRD-01M			Overly Centralized Reward Lifecycle Management
CRD-02M			Deprecated Approval Paradigm