CVE-2026-58043

Analyzed Analyzed - Analysis Complete

Node.js Permission Model Filesystem Access Bypass

Publication date: 2026-07-30

Last updated on: 2026-08-25

Assigner: HackerOne

Description

A flaw in Node.js Permission Model enforcement can over-grant filesystem access across radix-tree prefix boundaries. Under `--permission`, an attacker who is granted access to one path can abuse boundary handling to read from or write to paths outside the intended filesystem allowlist. This vulnerability affects Node.js **main**, **22.x**, **24.x**, and **26.x**.

CVSS Scores

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Meta Information

Published

2026-07-30

Last Modified

2026-08-25

Generated

2026-09-08

AI Q&A

2026-07-30

EPSS Evaluated

2026-09-07

NVD

CVE-2026-58043

EUVD

EUVD-2026-51021

Affected Vendors & Products

Vendor	Product	Version / Range
nodejs	node.js	From 22.0 (inc) to 22.23.1 (inc)
nodejs	node.js	From 24.0.0 (inc) to 24.18.0 (inc)
nodejs	node.js	From 26.0.0 (inc) to 26.5.0 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This vulnerability is a flaw in Node.js's Permission Model enforcement where an attacker granted access to one filesystem path can bypass boundaries to access or modify files outside the intended allowlist. It affects Node.js versions main, 22.x, 24.x, and 26.x.

Impact Analysis

An attacker could exploit this to read or write files outside the permitted filesystem paths, potentially accessing sensitive data or altering files beyond intended boundaries. This could lead to data breaches or unauthorized modifications.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating compliance requirements for data protection such as GDPR or HIPAA. It undermines security boundaries meant to protect regulated data.

Mitigation Strategies

Update Node.js to the latest patched version for your release line (26.x, 24.x, or 22.x) to address the Permission Model flaw. Avoid using the Permission Model in affected versions until updated.

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