Exchange

ChainSecurity3 Nov 2022Code version: not recorded (see the report)

ChainSecurity reviewed Polymarket (Exchange) on 3 Nov 2022: 19 findings, 2 critical; 16 marked fixed, 2 acknowledged, 1 open.

2 critical findings, fixed

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Report hosted on chainsecurity.com.

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Findings19

Statuses are the security firm’s own, from its report.

Severity	Open	Acknowledged	Fixed
Critical	0	0	2
High	0	0	1
Medium	0	0	3
Low	1	2	10

CriticalORDER_TYPEHASH Is IncorrectFixed

The report gives no description here.

CriticalSignatures Are Valid for Any AddressFixed

The report gives no description here.

HighFee Rate Not HashedFixed

The report gives no description here.

MediumFee Approval RequiredFixed

The report gives no description here.

MediumUnintended Order Types PossibleFixed

The report gives no description here.

MediumZero Address EOA Signer Considered ValidFixed

The report gives no description here.

LowCode ReplicationFixed

The report gives no description here.

LowDomain Separator CachedFixed

The report gives no description here.

LowFeeCharged Event Not Emitted in fillOrderFixed

The report gives no description here.

LowFloating PragmaFixed

The report gives no description here.

Show 6 more

LowisCrossing Incorrect When takerAmount Is 0Fixed

The report gives no description here.

LowNon-optimized Libraries UsedFixed

The report gives no description here.

LowOrder Status Possibly IncorrectFixed

The report gives no description here.

LowOrderStruct.taker Specification InconsistentFixed

The report gives no description here.

LowStruct Order Has Redundant FieldsFixed

The report gives no description here.

LowWrong Notice on Order.feeRateBpsFixed

The report gives no description here.

Contracts in scope

No deployed address is recorded for this audit.

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Part of Polymarket’s security record

Polymarket

Audits7 audits by 2 firmsLast audit Oct 2026, by Quantstamp.

Critical findingsNo open critical findingsAcross the 7 reports, 2 critical findings were reported. Each is marked fixed by the firm that reported it.

Open Polymarket’s security record

Security firm

ChainSecurity

81 projects reviewed · 286 reports · latest Sep 2026

See ChainSecurity’s audits

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