Root-cause analysis not yet published. The incident description below contains all currently available signal — review the attack transaction directly for definitive forensics.
Reproducible Foundry test fork from SunWeb3Sec/DeFiHackLabs. Clone the repo, run forge test against the file path above, and replay the exploit against a mainnet fork at the historical block. Use for reproduction only — not for live targets.
Cream Finance, the DeFi lending agreement, was attacked and lost approximately US$130 million. The stolen funds were mainly Cream LP tokens and other ERC-20 tokens. It is reported that this is the third largest DeFi hacking in history (although the two larger hacking incidents have funds returned), in addition, Cream Finance has suffered multiple lightning loan attacks before, and lost 37.5 million US dollars in February. Another $19 million was lost. Attack method (per SlowMist): Flash loan attack. Reported loss: $ 130,000,000.
- chain
- —
- protocol
- Cream Finance
- bug_class
- flashloan
- date_occurred
- 2021-10-27
- loss_usd
- $130,000,000
- source_id
- sm:cream-finance::2021-10-27