Hack history / 2022 / Hack or exploit
Jaypeggers
Hack or exploit on Dec 29, 2022 · Reentrancy
ONE SOURCE · 1 SOURCE
Lost
$18K
dollars at the time
Returned
none listed
as the sources state it
Rank
#2,144
among thefts by dollars lost
What happened
On December 29, 2022, Jaypeggers (JAY token) on Ethereum was exploited through a reentrancy vulnerability. The buyJay function lacked proper validation and allowed the attacker to insert a malicious contract as an ERC-721 token. The attacker reentered through the sell function using a miscalculated price to profit approximately 15.32 ETH (~$18.5K).
Details
- Date
- Dec 29, 2022
- Kind
- Hack or exploit
- Method
- Reentrancy
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- Ethereum
Reported by
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Cite this page
SwanBluechip, "Jaypeggers hack, Dec 29, 2022: $18K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/htef0152453c/ (data as of 2026-11-01).