Hack history / 2022 / Hack or exploit
Numbers Protocol
Hack or exploit on Nov 23, 2022 · Bridge Logic Flaw
SOURCES AGREE ON DATE AND LOSS · 2 SOURCES
Lost
$14K
dollars at the time
Returned
none listed
as the sources state it
Rank
#2,205
among thefts by dollars lost
What happened
Numbers Protocol's bridge integration with Multichain exposed a vulnerability in how excessive permissions were handled in the permit mechanism. An attacker exploited a user's unlimited permit grant to steal 557,754 NUM tokens, converting them to 13 ETH and draining multiple user accounts.
Details
- Date
- Nov 23, 2022
- Kind
- Hack or exploit
- Method
- Bridge Logic Flaw
- How in
- Bridge and cross-chain
- Target
- DeFi protocol
- Chains
- Ethereum
Reported by
Cite this page
SwanBluechip, "Numbers Protocol hack, Nov 23, 2022: $14K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/htf173f45fde/ (data as of 2026-10-31).