Path Traversal in socket.io-file

socket.io-file Updated 02 Oct 2025

Summary

07/07/2020

Disclosed on

CVE-2020-15779

CVE

No i

Fix available

High

Severity

7.5

CVSS Score

CVE-2020-15779: Path Traversal in socket.io-file. Affects socket.io-file versions < 2.0.31. No fix is published. How to fix ↓

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All versions of socket.io-file are vulnerable to Path Traversal. The package fails to sanitize user input and uses it to generate the file upload paths. The socket.io-file::createFile message contains a name option that is passed directly to path.join(). It is possible to upload files to arbitrary folders on the server by sending relative paths on the name value, such as ../../test.js. The uploadDir and rename options can be used to define the file upload path.