# CVE-2016-3956: Node.js 4: The CLI in npm before 2.15.1 and 3.x before 3.8.3, as used in Node.js 0.10 before 0.10.44, 0.12 before…

CVE-2016-3956 is fixed in 2 products on 2 platforms, first by Node.js 4 4.4.2, released April 1, 2016. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2016-3956
- Priority: High
- CVSS: 7.5 (Medium)
- EPSS: 0.0546
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 2, 2016
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2016-3956

## Description

The CLI in npm before 2.15.1 and 3.x before 3.8.3, as used in Node.js 0.10 before 0.10.44, 0.12 before 0.12.13, 4 before 4.4.2, and 5 before 5.10.0, includes bearer tokens with arbitrary requests, which allows remote HTTP servers to obtain sensitive information by reading Authorization headers.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Node.js 4 | 4.4.2 | [Node.js 4 4.4.2](https://patchblox.com/security/data/fix/windows-app/openjs.nodejs.4-4.4.2.md) | Apr 1, 2016 |
| Linux | npm Ubuntu 18.04.6 LTS (bionic) | 3.5.2-0ubuntu4.1.18.04.1~esm1 | [npm 3.5.2-0ubuntu4.1.18.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-npm-3.5.2-0ubuntu4.1.18.04.1-esm1.md) | Jul 2, 2016 |

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Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo