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CVE-2024-38355

HighPublished

Unhandled 'error' event in socket.io

Published: Jun 19, 2024
Updated: Sep 3, 2024
Assigning CNA: GitHub_M
Evidence observed: Aug 6, 2026

Primary CVSS

7.3/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS probability estimate

0.7%

Low · next 30 days

Percentile: 51.0%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Socket.IO is an open source, real-time, bidirectional, event-based, communication framework. A specially crafted Socket.IO packet can trigger an uncaught exception on the Socket.IO server, thus killing the Node.js process. This issue is fixed by commit `15af22fc22` which has been included in `[email protected]` (released in May 2023). The fix was backported in the 2.x branch as well with commit `d30630ba10`. Users are advised to upgrade. Users unable to upgrade may attach a listener for the "error" event to catch these errors.

Sources

CVE-2024-38355-PoCPoC
Proof of concept of CVE-2024-47554

Responsible use

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