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low Input Validation No SWC entry CWE-20

Missing Zero-Address Validation

SAFE-0072 Input Validation Checked automatically by the scanner
1

What goes wrong

Setters for critical addresses (owner, treasury, token) don't reject address(0), risking permanent loss of control or funds sent to the zero address.

2

How to fix it

the pattern that is safe
function setTreasury(address t) external onlyOwner {
    require(t != address(0), "zero"); treasury = t;
}
◆
Validate against the zero address.
3

Where this has happened

Largest recorded losses in the same failure class — related, not the same bug:

$586M · 2022 BNB Chain Token Hub Input validation · 2022 $326M · 2022 Wormhole Input validation · 2022 $197M · 2023 Euler Finance Input validation · 2023 $190M · 2022 Nomad Bridge Input validation · 2022
4

Related vulnerabilities in Input Validation

SAFE-0073Missing Input Validation / Parameter Bounds medium · Input Validation SAFE-0074Array Length Mismatch in Batch Operations medium · Input Validation SAFE-0089Short Address / Calldata Padding (legacy) low · Input Validation SAFE-0140Missing Zero-Address Validation on Critical Setter low · Input Validation SAFE-0255Array Index Used Without Bounds Assumption low · Input Validation SAFE-0304Missing Zero-Value Validation on Value-Moving Function low · Input Validation
← PreviousIncorrect Accounting / Internal Balance Drift
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