F-2025-0006·operational-risk

Manual reward funding mechanism poses operational risk

Fixedstakingnft-boostrewards
TL;DR

Contract relies entirely on manual reward funding with no monitoring events or low-balance threshold, exposing the protocol to operational coordination risk.

Severity
LOW
Impact
LOW
Likelihood
MEDIUM
Method
MManual review
CAT.
Complexity
LOW
Exploitability
LOW
02Section · Description

Description

The contract relies entirely on manual funding through the fundRewards() function:

solidity
function fundRewards(uint256 amount) external onlyOwner {
require(amount > 0, "Amount must be greater than zero");
stakingToken.safeTransferFrom(msg.sender, address(this), amount);
emit RewardsFunded(msg.sender, amount);
}

While it is expected that the team will fund rewards, relying solely on manual funding introduces operational risks:

  1. Human error in timing of funding.
  2. Key person risk if funding coordinator is unavailable.
  3. No automated top-up mechanism.
  4. No warning system for low balance.
03Section · Recommendation

Recommendation

Implement safety mechanisms around manual funding. Add monitoring events and a minimum balance threshold:

solidity
event LowBalance(uint256 currentBalance, uint256 threshold);
uint256 public constant MIN_BALANCE_THRESHOLD = 1000e18;
function checkBalance() public {
if (stakingToken.balanceOf(address(this)) < MIN_BALANCE_THRESHOLD) {
emit LowBalance(stakingToken.balanceOf(address(this)), MIN_BALANCE_THRESHOLD);
}
}
04Section · Resolution

Resolution

Ample Protocol: Fixed.

Zealynx: Verified. Both event for monitoring added and also the checkBalance function.

Status
Fixed
F-2025-0006

oog
zealynx

Smart Contract Security Digest

Monthly exploit breakdowns, audit checklists, and DeFi security research — straight to your inbox

© 2026 Zealynx