{"id":"CVE-2023-31125","published":"2023-05-08T20:21:01Z","modified":"2025-02-13T16:49:44Z","title":"Uncaught exception in engine.io","vendor":"socketio","product":"engine.io","tier":"tail","description":{"text":"Engine.IO is the implementation of transport-based cross-browser/cross-device bi-directional communication layer for Socket.IO. An uncaught exception vulnerability was introduced in version 5.1.0 and included in version 4.1.0 of the `socket.io` parent package. Older versions are not impacted. 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, including those who use depending packages like `socket.io`. This issue was fixed in version 6.4.2 of Engine.IO. There is no known workaround except upgrading to a safe version.","provenance":"source","from":"CVE.org"},"cvss":{"score":6.5,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.01327,"percentile":0.7099,"provenance":"source"},"cwes":[{"id":"CWE-248","name":"Uncaught Exception"}],"references":[{"url":"https://github.com/socketio/engine.io/security/advisories/GHSA-q9mw-68c2-j6m5","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/socketio/engine.io/commit/fc480b4f305e16fe5972cf337d055e598372dc44","tags":["x_refsource_MISC"]},{"url":"https://github.com/socketio/engine.io/releases/tag/6.4.2","tags":["x_refsource_MISC"]},{"url":"https://security.netapp.com/advisory/ntap-20230622-0002/","tags":[]}],"priority":{"score":18.7,"factors":[{"name":"EPSS percentile","points":14.2},{"name":"CVSS severity","points":4.55}]},"vendorSlug":"socketio","affectedVersions":[{"vendor":"socketio","product":"engine.io","versions":[">= 5.1.0, < 6.4.2"]}],"affected":[{"ecosystem":"npm","package":"engine.io","vulnerableRanges":[">=5.1.0, <6.4.2"],"patched":["6.4.2"],"from":["GHSA-q9mw-68c2-j6m5"],"provenance":"source"}],"euvd":{"id":"EUVD-2023-1610","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-socketio-engine-io-cve-2022-41940","packageHistory":[{"cve":"CVE-2020-36048","published":"2021-01-07","fixed":"3.6.0","kev":false},{"cve":"CVE-2022-21676","published":"2022-01-12","fixed":"6.1.1","kev":false},{"cve":"CVE-2022-41940","published":"2022-11-22","fixed":"6.2.1","kev":false,"link":{"from":"CVE-2022-41940","to":"CVE-2023-31125","relation":"successor","confidence":"medium","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"npm:engine.io","fromFixed":"6.2.1","toFixed":"6.4.2","daysApart":167},{"kind":"similar","provenance":"machine","score":0.89,"basis":"same product + CWE + description similarity"}]}},{"cve":"CVE-2023-31125","published":"2023-05-08","fixed":"6.4.2","kev":false},{"cve":"CVE-2026-59724","published":"2026-07-08","fixed":"6.6.7","kev":false},{"cve":"CVE-2026-59725","published":"2026-07-08","fixed":"6.6.7","kev":false},{"cve":"CVE-2026-102599","published":"2026-10-13","fixed":"6.6.10","kev":false}],"package":"npm:engine.io"}}