# @ethereumjs/util@8.1.0 security report (npm)

- Verdict: **No issues** (risk level: safe)
- Scanned: 2026-10-04T16:06:25.000Z
- Files reviewed: 30
- Findings: 1 low severity finding
- Report: https://security.togoder.click/npm/@ethereumjs/util@8.1.0
- Source: Togoder Security (https://security.togoder.click), AI source-code review

## Summary

Togoder Security scanned the npm package @ethereumjs/util@8.1.0 on Oct 4, 2026. An AI review of 30 source files produced 1 low severity finding. No malicious behavior, install-time payloads, credential theft or exfiltration were identified.

## Findings

### [low] Network Request

Finding ID: `NPS-B367CBC2FF2C`

File: `src/provider.ts:6`

The function fetchFromProvider makes an HTTP POST request to the provided URL. This is expected behavior for an RPC provider helper. No data exfiltration to hardcoded external servers is present; the URL is supplied by the caller.

## Files reviewed

- `dist/account.js` (safe): This is a legitimate Ethereum account utility library (from ethereumjs) with no malicious patterns, no data exfiltration, no credential harvesting, no dynamic code execution, and no suspicious network or filesystem activity.
- `dist/address.js` (safe): No malicious patterns detected; the code is a standard Ethereum address utility with no network, filesystem, or process activity.
- `dist/asyncEventEmitter.js` (safe): No malicious patterns detected; the code is a legitimate async EventEmitter implementation with no data exfiltration, credential harvesting, obfuscation, or other red flags.
- `dist/bytes.js` (safe): No malicious patterns detected
- `dist/constants.js` (safe): No malicious patterns detected
- `dist/encoding.js` (safe): No malicious patterns detected; the code is a legitimate Ethereum Patricia Merkle Trie encoding utility with no network, filesystem, process, or dynamic execution behavior.
- `dist/helpers.js` (safe): No malicious patterns detected
- `dist/index.js` (safe): No malicious patterns detected; the file contains only standard TypeScript/CommonJS re-export boilerplate for an Ethereum utility library.
- `dist/internal.js` (safe): No malicious patterns detected; the code contains only standard Ethereum utility functions for hex/ASCII handling with no external network, process, or filesystem operations.
- `dist/lock.js` (safe): Cleared by Jev triage; no further analysis needed
- `dist/provider.js` (safe): No malicious patterns detected; the code performs standard JSON-RPC fetch operations and provider URL extraction without exfiltration, obfuscation, or dangerous system calls.
- `dist/signature.js` (safe): No malicious patterns detected
- `dist/types.js` (safe): No malicious patterns detected; the code is a straightforward type conversion utility with input validation and no external calls, file access, or dynamic execution.
- `dist/units.js` (safe): No malicious patterns detected
- `dist/withdrawal.js` (safe): No malicious patterns detected; the code is a straightforward EIP-4895 withdrawal data representation class with no external calls, dynamic execution, or filesystem access.
- `src/account.ts` (safe): No malicious patterns detected; the file implements standard Ethereum account utilities without exfiltration, obfuscation, or backdoor behavior.
- `src/address.ts` (safe): No malicious patterns detected
- `src/asyncEventEmitter.ts` (safe): No malicious patterns detected; the code is a straightforward TypeScript port of a well-known async event emitter library with no network, filesystem, process, or obfuscation concerns.
- `src/bytes.ts` (safe): Cleared by Jev triage; no further analysis needed
- `src/constants.ts` (safe): No malicious patterns detected
- `src/encoding.ts` (safe): Cleared by Jev triage; no further analysis needed
- `src/helpers.ts` (safe): Cleared by Jev triage; no further analysis needed
- `src/index.ts` (safe): No malicious patterns detected
- `src/internal.ts` (safe): Cleared by Jev triage; no further analysis needed
- `src/lock.ts` (safe): Cleared by Jev triage; no further analysis needed
- `src/provider.ts` (safe): The code is a benign RPC provider helper with no malicious patterns detected.
- `src/signature.ts` (safe): No malicious patterns detected; the code is a standard Ethereum ECDSA signature utility without exfiltration, obfuscation, or dynamic execution.
- `src/types.ts` (safe): Cleared by Jev triage; no further analysis needed
- `src/units.ts` (safe): Cleared by Jev triage; no further analysis needed
- `src/withdrawal.ts` (safe): No malicious patterns detected; the code is a standard EIP-4895 withdrawal data class with no network, filesystem, process, or dynamic code execution behaviors.

## Version ranges

None of the 2 scanned versions of @ethereumjs/util are flagged high or critical. The latest scanned version, 10.0.0, is not scanned. Only versions we have scanned are listed; unscanned versions between them are not covered.

- 10.0.0 (`10.0.0`): not scanned
- 9.1.0 (`9.1.0`): medium (SSRF / unrestricted outbound request +1 more)
- 8.1.0 (`8.1.0`): clean

## Scanned versions

- [9.1.0](https://security.togoder.click/npm/@ethereumjs/util@9.1.0): medium, 2026-10-04T21:27:35.000Z
- [8.1.0](https://security.togoder.click/npm/@ethereumjs/util@8.1.0): safe, 2026-10-04T16:06:25.000Z

AI analysis is guidance, not a guarantee. Methodology: https://security.togoder.click/methodology