HexBrain

Node.js · Report #3625987

Permission Model bypass via FileHandle.utimes() in the promises API

Validstatus
lowseverity
4upvotes
25 Jun 2026disclosed

Summary

A flaw in Node.js Permission API can cause a file metadata to be modified even on a path that was set as read-only with e.g. --allow-fs-read.

This vulnerability affects all supported release lines: Node.js 22, Node.js 24, and Node.js 26.

How it was found

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This report was disclosed publicly on HackerOne and belongs to its author and the program. See the original