{"api_version":"1","generated_at":"2026-04-23T07:57:26+00:00","cve":"CVE-2022-21676","urls":{"html":"https://cve.report/CVE-2022-21676","api":"https://cve.report/api/cve/CVE-2022-21676.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-21676","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-21676"},"summary":{"title":"CVE-2022-21676","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. 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