Hack history / 2024 / Hack or exploit
Affine Protocol
Hack or exploit on Feb 1, 2024 · Missing Input Validation
SOURCES AGREE ON DATE AND LOSS · 2 SOURCES
Lost
$88K
dollars at the time
Returned
none listed
as the sources state it
Rank
#1,783
among thefts by dollars lost
What happened
The Affine Protocol's flashloan callback failed to validate userData parameters from untrusted sources. Attackers exploited this to trigger the upgrade path and steal collateral assets.
Details
- Date
- Feb 1, 2024
- Kind
- Hack or exploit
- Method
- Missing Input Validation
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- Ethereum
Reported by
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Cite this page
SwanBluechip, "Affine Protocol hack, Feb 1, 2024: $88K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/hta2b9e5c5df/ (data as of 2026-10-31).