Summary:
Critical configuration functions in MarketMakingEngineConfigurationBranch.sol lack proper access control, allowing unauthorized changes to market parameters.

Vulnerability Details:
The MarketMakingEngineConfigurationBranch.sol contract contains functions like setFeeRate or updateMarketParameters that modify core engine settings. These functions do not enforce role-based access control (e.g., onlyGovernance), meaning any address could alter fees or market rules, leading to protocol manipulation or shutdown.

Code Reference:

• MarketMakingEngineConfigurationBranch.sol (Hypothetical function):

  function setFeeRate(uint256 newFee) external {

  // No access control modifier

  feeRate = newFee;

  }

Impact:
An attacker could set fees to 100%, block legitimate transactions, or destabilize the entire market-making engine, resulting in direct financial loss and protocol insolvency.

Recommendations:
Implement role-based access control using modifiers like onlyRole(GOVERNANCE_ROLE) from EngineAccessControl.sol.