npm · npm:bufferutil

bufferutil active

WebSocket buffer utils

The latest stable version of bufferutil is 4.2.0, published on 2026-11-07. Verified by Vigia on 2026-11-12.

Latest stable version	4.2.0
Published	2026-11-07 19:49:19 UTC
Install	`npm install bufferutil@latest`
Requires (engines)	`{"node":">=6.14.2"}`
Peer dependencies	—
Dist-tags	`n-api: 3.0.3-napi` `latest: 4.2.0`
License	MIT
Advisories on latest version	none known
Last verified	2026-11-12 21:49:12 UTC
Sources	api.deps.dev, registry.npmjs.org, registry.npmjs.org

Maintenance

Activity	active
Last stable release	2026-11-07 19:49:19 UTC · 5 days ago
Stable releases in the last 12 months	2
Published versions	27

Heuristic based only on release dates; it does not measure issue or security response times.

Version history

Version	Published
`4.2.0`	2026-11-07 19:49:19 UTC
`4.1.0`	2025-12-18 16:24:21 UTC
`4.0.9`	2024-12-27 16:48:22 UTC
`4.0.8`	2023-10-15 16:36:08 UTC
`4.0.7`	2022-10-18 13:38:10 UTC
`4.0.6`	2022-01-02 08:19:43 UTC
`4.0.5`	2021-10-13 17:05:48 UTC
`4.0.4`	2021-09-25 18:59:41 UTC
`4.0.3`	2021-01-02 20:08:49 UTC
`4.0.2`	2020-10-31 13:56:27 UTC
`4.0.1`	2018-12-23 08:07:52 UTC
`4.0.0`	2018-07-03 06:30:03 UTC
`3.0.5`	2018-05-06 05:49:55 UTC
`3.0.4`	2018-04-06 11:12:14 UTC
`3.0.3`	2017-11-03 08:26:53 UTC
`3.0.2`	2017-07-07 10:30:54 UTC
`3.0.1`	2017-05-31 07:52:14 UTC
`3.0.0`	2017-03-03 11:22:59 UTC
`2.0.1`	2017-02-07 17:44:36 UTC
`2.0.0`	2017-02-03 17:51:59 UTC

Showing the 20 most recent of 26 versions. JSON

Version compatibility

Newest stable version that declares support for each runtime version (from the requirements published with each version).

Runtime	Newest compatible version
`node 16`	`4.2.0`
`node 18`	`4.2.0`
`node 20`	`4.2.0`
`node 22`	`4.2.0`
`node 24`	`4.2.0`

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Frequently asked questions

What is the latest version of bufferutil?

The latest stable version of bufferutil is 4.2.0, published on 2026-11-07. Verified by Vigia on 2026-11-12.

How do I install the latest version of bufferutil?

Run npm install bufferutil@latest. The latest stable version is 4.2.0 (verified 2026-11-12).

Is bufferutil deprecated?

No. bufferutil is not marked as deprecated in the registry.

Which Node.js version does bufferutil require?

bufferutil 4.2.0 declares this requirement: {"node":">=6.14.2"}.

Does bufferutil 4.2.0 have known vulnerabilities?

No known advisories affect bufferutil 4.2.0 according to the data Vigia checks.

Is bufferutil still maintained?

bufferutil published 2 stable releases in the last 12 months; the most recent was 5 days ago. Activity: active.

Observed changes

Sat Nov 07 2026 21:47:20 GM +0000 (Coordinated Universal Time) — released 4.1.0 → 4.2.0

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