Is engine.io safe to use?

engine.io has no known vulnerabilities on the latest version (6.6.7). DepScope rates its health at 98/100 (low risk).

What is the latest version of engine.io?

The latest version of engine.io is 6.6.7, released 2026-04-27.

Does engine.io have known vulnerabilities?

No known vulnerabilities on the latest version of engine.io.

Is engine.io deprecated?

No, engine.io is actively maintained. Latest release: 6.6.7 (2026-04-27).

What are alternatives to engine.io?

Popular alternatives to engine.io in npm include: semver, debug, minimatch, strip-ansi, ms.

What license does engine.io use?

engine.io is licensed under MIT.

engine.io

npmv6.6.7

The realtime engine behind Socket.IO. Provides the foundation of a bidirectional connection between client and server

License MITpermissive157 versions2 maintainers10 deps12,769,580 weekly dl

socketio/socket.io

/ 100

Health

safe to use

[email protected] is safe to use (health: 98/100)

Health breakdown0 – 100

25/25

maintenance

20/20

popularity

25/25

security

15/15

maturity

13/15

community

Vulnerabilities

none known

Bundle & TypeScript

📦

Bundle Size

46.4 KBminified

13.2 KB gzipped

10 direct dependencies

side effects

🌟

TypeScript

10/10typed

bundled

Quality signals

Download trend

stable(0%)

Publish security

npm attested

Health History

Dependency Tree

License Audit

Dependencies (10)

@types/cors @types/node @types/ws accepts base64id cookie cors debug engine.io-parser ws

API access

Get this data programmatically — free, no authentication.

curl https://depscope.dev/api/check/npm/engine.io