Hack history / 2020 / Hack or exploit
Coral
Hack or exploit on Sep 10, 2020 · Reentrancy
SOURCES AGREE ON DATE AND LOSS · 2 SOURCES
Lost
$420K
dollars at the time
Returned
none listed
as the sources state it
Rank
#1,209
among thefts by dollars lost
What happened
The wRAM token contract had a reentrancy vulnerability in the buyram function. When wram::buyram was called multiple times simultaneously, the asynchronous call to eosio::buyram caused the same RAM bytes value to be used across multiple calls, allowing minting of more tokens than intended.
Details
- Date
- Sep 10, 2020
- Kind
- Hack or exploit
- Method
- Reentrancy
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- EOS
Reported by
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Cite this page
SwanBluechip, "Coral hack, Sep 10, 2020: $420K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht12816b2811/ (data as of 2026-10-31).