Wallchain MetaSwapWrapper

Paladin2 addresses on Polygon (POS) and BNB Chain

Paladin reviewed Wallchain (Wallchain MetaSwapWrapper) on 4 May 2023: 9 findings, 0 critical; all marked fixed.

No open critical findings
Open the reportOpen Wallchain’s security record
Report stored on IPFS. Content hash QmWX2pCiiawA9f6jSqfC7taQJSmgpt4Dm8uXzV83GcunMe

Trustblock does not review code.

Findings9

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

SeverityOpenAcknowledgedFixed
Critical000
High001
Medium002
Low006
HighContract structure allows for an exploiter to drain all open approvals to the MetaSwapWrapperFixed

The report gives no description here.

MediumETH to ETH wrapped transactions will fully failFixed

The report gives no description here.

MediumUsers will lose value through many router interactions including transferTokensForExactTokens due to input dust being stuck in the wrapperFixed

The report gives no description here.

LowContract does not work for non-compliant ERC20 tokens like USDT on EthereumFixed

The report gives no description here.

LowContract might not work for non-EOA sendersFixed

The report gives no description here.

LowGas optimizationsFixed

The report gives no description here.

LowLack of validationFixed

The report gives no description here.

LowTypographical errorsFixed

The report gives no description here.

LowwithdrawETH might fail due to the use of transfer instead of callFixed

The report gives no description here.

Contracts in scope2

AddressChainSource code
0x4def20e7dbfeab6b2cfeb53bdca28a6dced12317Chain: BNB ChainSource code: Verified source
0x4def20e7dbfeab6b2cfeb53bdca28a6dced12317Chain: Polygon (POS)Source code: Verified source

Part of Wallchain’s security record

Wallchain
Audits3 audits by 1 firmLast audit Sep 2023, by Paladin.
Critical findingsNo open critical findingsAcross 3 reports.
Open Wallchain’s security record

Security firm

Paladin

176 projects reviewed · 241 reports · latest Apr 2025

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