ChainBleedv0.1 · open intel
← back to feed·FLASHLOAN2021-08-29 · 4y ago
Incident · SLOWMIST

xToken

Flash loan attack
Estimated loss
$4.50M
VERDICT —UNRATED
Verdict pending. Auto-ingested incidents are reviewed before a public verdict is rendered.
▰ METHOD
FLASHLOAN
FLASHLOANBYTECODE CATCHABLEAI SCANNABLE
Root cause

Root-cause analysis not yet published. The incident description below contains all currently available signal — review the attack transaction directly for definitive forensics.

Forensic narrative

The DeFi pledge and liquidity strategy platform xToken, which suffered a lightning loan attack, released an analysis report on the vulnerability of the xSNX contract. At 4:43 UTC on August 29th, a vulnerability in the xSNX contract was exploited, and the holder's loss was estimated to be 4.5 million U.S. dollars. xToken believes that it is best to stop providing xSNX products at this time. xToken stated that it will no longer use the xSNX contract for SNX pledge. Attack method (per SlowMist): Flash loan attack. Reported loss: $ 4,500,000.

Primary source
https://medium.com/xtoken/xsnx-post-mortem-666d35071f38
Sourced from
slowmist
Technical record
chain
protocol
xToken
bug_class
flashloan
date_occurred
2021-08-29
loss_usd
$4,500,000
source_id
sm:xtoken::2021-08-29
Related — same bug class· flashloan
2026-05-11
1mo ago
POLY
Ink Finance
Contract Vulnerability
flashloan
$140.0K
UNRATED
2026-05-04
1mo ago
ETH
SmartCredit
Flashloan Exploit
flashloan
$72.0K
UNRATED
2026-05-04
1mo ago
SmartCredit
Flash Loan Exploit
flashloan
$72.0K
UNRATED
2026-04-28
1mo ago
BSC
JUDAO
Flashloan Exploit
flashloan
$228.0K
UNRATED
2026-04-28
1mo ago
JUDAO
Exploit
flashloan
$228.0K
UNRATED
2026-04-15
1mo ago
LootBot AI
Contract Vulnerability
flashloan
$9.6K
UNRATED
ChainBleed — live web3 threat intelligence