cve/2023/CVE-2023-30542.md

### [CVE-2023-30542](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-30542)
![](https://img.shields.io/static/v1?label=Product&message=openzeppelin-contracts&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20%3E%3D%204.3.0%2C%20%3C%204.8.3%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-20%3A%20Improper%20Input%20Validation&color=brighgreen)

### Description

OpenZeppelin Contracts is a library for secure smart contract development. The proposal creation entrypoint (`propose`) in `GovernorCompatibilityBravo` allows the creation of proposals with a `signatures` array shorter than the `calldatas` array. This causes the additional elements of the latter to be ignored, and if the proposal succeeds the corresponding actions would eventually execute without any calldata. The `ProposalCreated` event correctly represents what will eventually execute, but the proposal parameters as queried through `getActions` appear to respect the original intended calldata. This issue has been patched in 4.8.3. As a workaround, ensure that all proposals that pass through governance have equal length `signatures` and `calldatas` parameters.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/davidlpoole/eth-erc20-governance