Hack history / 2022 / Hack or exploit
Polynomial
Hack or exploit on Nov 18, 2022 · Missing Input Validation
IN REVIEWSOURCES DISAGREE ON DATE OR LOSS · 2 SOURCES
Lost
$7K
sources: $1K to $7K
Returned
none listed
as the sources state it
Rank
#2,301
among thefts by dollars lost
What happened
Polynomial Protocol on Optimism suffered a missing input validation vulnerability. The flaw affected a select number of users in a contract variant not used for all functionality. The protocol compensated affected users.
In review: sources disagree on the loss.
Details
- Date
- Nov 18, 2022
- Kind
- Hack or exploit
- Method
- Missing Input Validation
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- Optimism
After the theft
- Victims reimbursed
- yes, amount not stated
“The protocol compensated affected users.” (DefiLlama)
Reported by
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Cite this page
SwanBluechip, "Polynomial hack, Nov 18, 2022: $7K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/htb94995e1c7/ (data as of 2026-10-31).