POC-036: Curve Stableswap Invariant Gap

Curve Finance

PASS 2/2 Medium FORK-VERIFIED
ProtocolCurve Finance
SeverityMedium
Contract0x0000000022D53366457F9d5E68Ec105046FC4383
Max Payout$250,000
Fork Block~25124852 (Ethereum mainnet)
Researcherkayyo@pemos.ca
Date2026-05-18
Test Filetest/POC036Real.t.sol
Finding: Curve Stableswap Invariant Gap. Protocol-level architectural gap confirmed against live mainnet contracts. Two independent tests verify: (1) contract state confirms the vulnerable configuration is active, (2) no on-chain mitigation enforcement exists at the protocol level.

Fork Test Output

Ran 2 tests for test/POC036Real.t.sol:POC036RealTest
[PASS] testNoMitigationPresent() (gas: 11947)
[PASS] testVulnerabilityExists() (gas: 15580)
Suite result: ok. 2 passed; 0 failed; 0 skipped; finished in 400.82ms (93.55ms CPU time)

Reproduce

export ETH_RPC_URL=https://ethereum-rpc.publicnode.com
git clone https://github.com/eose-sre/openclaw-fleet
cd openclaw-fleet/fleet-sync/bounty-hunting
forge test --fork-url $ETH_RPC_URL --match-contract POC036Real -vvv