Hack history / 2021 / Hack or exploit

Bent Finance

Hack or exploit on Dec 21, 2021 · Backdoor Contract

IN REVIEWSOURCES AGREE ON DATE AND LOSS · 4 SOURCES

Lost

$1.8M

dollars at the time

Returned

none listed

as the sources state it

Rank

#744

among thefts by dollars lost

What happened

Bent Finance was exploited by rogue developer who inserted backdoor into contracts during period lacking multisig protection, extracting 513k cvxcrv LP tokens (~440 ETH/$1.75M).

In review: possible duplicate within one source.

Details

Date: Dec 21, 2021
Kind: Hack or exploit
Method: Backdoor Contract
How in: Insiders: rug pulls, frauds, collapses
Target: DeFi protocol
Chains: Ethereum
Audit (rekt.news): unaudited

Reported by

DefiLlama ↗
rekt.news ↗
SlowMist Hacked ↗
Web3 Is Going Great ↗

Related incidents

StableMagnet 2021 · Rug pull · $27M

Cite this page

SwanBluechip, "Bent Finance hack, Dec 21, 2021: $1.8M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/htda8bbd41e6/ (data as of 2026-10-31).

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