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Hack history / 2022 / Hack or exploit

FEG Token

Hack or exploit on May 16, 2022 · Improper Access Control

IN REVIEWSOURCES DISAGREE ON DATE OR LOSS · 3 SOURCES
Lost
$1.9M
sources: $1.3M to $1.9M
Returned
none listed
as the sources state it
Rank
#722
among thefts by dollars lost

What happened

FEG's swapToSwap() function lacked input validation on the 'path' parameter, allowing attackers via flashloan to gain unlimited allowance and drain contract assets. Multiple attacks on May 15-16 extracted ~$1.3M + $1.9M total across ETH and BSC networks.

In review: possible duplicate within one source.

Details

Date
May 16, 2022
Kind
Hack or exploit
Method
Improper Access Control
How in
Smart contract bug
Target
Token
Chains
BNB Chain, Ethereum

Reported by

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Cite this pageSwanBluechip, "FEG Token hack, May 16, 2022: $1.9M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht33eb239c76/ (data as of 2026-10-31).
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