# @metamask/utils@5.0.2 security report (npm)

- Verdict: **No issues** (risk level: safe)
- Scanned: 2026-10-04T16:07:01.000Z
- Files reviewed: 18
- Findings: no findings
- Report: https://security.togoder.click/npm/@metamask/utils@5.0.2
- Source: Togoder Security (https://security.togoder.click), AI source-code review

## Summary

Togoder Security scanned the npm package @metamask/utils@5.0.2 on Oct 4, 2026. An AI review of 18 source files produced no findings. No malicious behavior, install-time payloads, credential theft or exfiltration were identified.

## Findings

No findings.

## Files reviewed

- `dist/assert.js` (safe): No malicious patterns detected
- `dist/base64.js` (safe): No malicious patterns detected
- `dist/bytes.js` (safe): No malicious patterns detected
- `dist/checksum.js` (safe): No malicious patterns detected
- `dist/coercers.js` (safe): No malicious patterns detected
- `dist/collections.js` (safe): No malicious patterns detected; the code implements immutable FrozenMap and FrozenSet classes with no network, file system, process execution, or environment access.
- `dist/encryption-types.js` (safe): No malicious patterns detected
- `dist/hex.js` (safe): No malicious patterns detected
- `dist/index.js` (safe): No malicious patterns detected
- `dist/json.js` (safe): The code is a legitimate JSON-RPC validation utility using the superstruct library, with no malicious patterns such as data exfiltration, credential harvesting, obfuscated payloads, process spawning, or suspicious network activity.
- `dist/keyring.js` (safe): No malicious patterns detected
- `dist/logging.js` (safe): No malicious patterns detected
- `dist/misc.js` (safe): No malicious patterns detected
- `dist/number.js` (safe): No malicious patterns detected
- `dist/opaque.js` (safe): No malicious patterns detected
- `dist/time.js` (safe): No malicious patterns detected
- `dist/transaction-types.js` (safe): No malicious patterns detected
- `dist/versions.js` (safe): No malicious patterns detected; the file only provides SemVer validation utilities using semver and superstruct libraries.

## Version ranges

None of the 5 scanned versions of @metamask/utils are flagged high or critical. The latest scanned version, 12.0.0, is clean. Only versions we have scanned are listed; unscanned versions between them are not covered.

- 12.0.0 (`12.0.0`): clean
- 11.11.0 – 11.12.1 (`>=11.11.0 <=11.12.1`): not scanned
- 8.5.0 – 11.8.1 (`>=8.5.0 <=11.8.1`): medium (file system manipulation)
- 5.0.2 (`5.0.2`): clean

## Scanned versions

- [12.0.0](https://security.togoder.click/npm/@metamask/utils@12.0.0): safe, 2026-10-04T21:27:24.000Z
- [11.8.1](https://security.togoder.click/npm/@metamask/utils@11.8.1): medium, 2026-10-04T16:08:47.000Z
- [9.3.0](https://security.togoder.click/npm/@metamask/utils@9.3.0): medium, 2026-10-04T16:06:58.000Z
- [8.5.0](https://security.togoder.click/npm/@metamask/utils@8.5.0): medium, 2026-10-04T16:06:54.000Z
- [5.0.2](https://security.togoder.click/npm/@metamask/utils@5.0.2): safe, 2026-10-04T16:07:01.000Z

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