Hack history / 2021 / Hack or exploit
Xtoken
Hack or exploit on Aug 29, 2021 · Spot Price Manipulation
IN REVIEWSOURCES AGREE ON DATE AND LOSS · 4 SOURCES
Lost
$4.5M
dollars at the time
Returned
none listed
as the sources state it
Rank
#485
among thefts by dollars lost
What happened
An attacker used an $81M flashloan from dYdX to manipulate SNX price downward, then exploited an access control vulnerability in xToken's callFunction to purchase SNX at artificially depressed prices, stealing $4.5M in value.
In review: possible duplicate within one source.
Details
- Date
- Aug 29, 2021
- Kind
- Hack or exploit
- Method
- Spot Price Manipulation
- How in
- Price, oracle and governance
- Target
- DeFi protocol
- Chains
- Ethereum
- Audit (rekt.news)
- unaudited
Related incidents
xToken 2021 · Hack or exploit · $25M
$24.5 million emptied from xToken platform 2021 · Hack or exploit · $24.5M
Xtoken 2021 · Hack or exploit · $24M
CREAM Lending 2021 · Hack or exploit · $130M
Venus Protocol 2021 · Hack or exploit · $100M
$24.5 million emptied from xToken platform 2021 · Hack or exploit · $24.5M
Xtoken 2021 · Hack or exploit · $24M
CREAM Lending 2021 · Hack or exploit · $130M
Venus Protocol 2021 · Hack or exploit · $100M
Cite this page
SwanBluechip, "Xtoken hack, Aug 29, 2021: $4.5M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht4e87db864f/ (data as of 2026-10-31).