CVE-2022-21676
Uncaught Exception in engine.io
- State
- Published
- Severity
- 7.5 High
- Published
- Jan 12, 2022
- Updated
- Apr 23, 2025
- Reserved
- Nov 16, 2021
Description
Engine.IO is the implementation of transport-based cross-browser/cross-device bi-directional communication layer for Socket.IO. A specially crafted HTTP request can trigger an uncaught exception on the Engine.IO server, thus killing the Node.js process. This impacts all the users of the `engine.io` package starting from version `4.0.0`, including those who uses depending packages like `socket.io`. Versions prior to `4.0.0` are not impacted. A fix has been released for each major branch, namely `4.1.2` for the `4.x.x` branch, `5.2.1` for the `5.x.x` branch, and `6.1.1` for the `6.x.x` branch. There is no known workaround except upgrading to a safe version.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | GitHub_M |
Weaknesses
- CWE-754 Improper Check for Unusual or Exceptional Conditions
Affected Products
| Product | Versions |
|---|---|
engine.iosocketio |
|
References
- https://github.com/socketio/engine.io/security/advisories/GHSA-273r-mgr4-v34f
- https://github.com/socketio/engine.io/commit/66f889fc1d966bf5bfa0de1939069153643874ab
- https://github.com/socketio/engine.io/commit/a70800d7e96da32f6e6622804ef659ebc58659db
- https://github.com/socketio/engine.io/commit/c0e194d44933bd83bf9a4b126fca68ba7bf5098c
- https://github.com/socketio/engine.io/releases/tag/4.1.2
- https://github.com/socketio/engine.io/releases/tag/5.2.1
- https://github.com/socketio/engine.io/releases/tag/6.1.1
- https://security.netapp.com/advisory/ntap-20220209-0002/
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