CVE-2026-58039
Received Received - Intake

Permission Model Bypass in Node.js via process.report

Publication date: 2026-07-31

Last updated on: 2026-07-31

Assigner: HackerOne

Description
A flaw in Node.js Permission Model enforcement allows process.report writes (and overwrites) files outside --allow-fs-write paths. This can lead to confidentiality impact or bypass of the intended security boundary under affected configurations. This vulnerability affects Node.js **22.x**, **24.x**, and **26.x**.

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Meta Information

Published
2026-07-31
Last Modified
2026-07-31
Generated
2026-07-31
AI Q&A
2026-07-31
EPSS Evaluated
N/A
NVD
CVE-2026-58039
EUVD
EUVD-2026-51369

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
nodejs node.js From 22.0.0 (inc) to 23.0.0 (exc)
nodejs node.js From 24.0.0 (inc) to 25.0.0 (exc)
nodejs node.js From 26.0.0 (inc) to 27.0.0 (exc)

Helpful Resources

Exploitability

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

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Executive Summary

This vulnerability is a flaw in Node.js's Permission Model enforcement. It allows the process.report feature to write or overwrite files outside the designated --allow-fs-write paths. This can lead to unauthorized file access or modification, potentially bypassing intended security boundaries.

Impact Analysis

The impact includes potential confidentiality breaches if sensitive files are accessed or overwritten. It may also allow bypassing security restrictions, leading to unauthorized actions within the system. Affected users are those running Node.js versions 22.x, 24.x, or 26.x.

Compliance Impact

This vulnerability could lead to unauthorized file writes outside intended paths, potentially exposing sensitive data. This may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information if exploited.

Mitigation Strategies

Update Node.js to the latest patched version for your release line (22.x, 24.x, or 26.x). Avoid using --allow-fs-write with process.report unless absolutely necessary. Review file system permissions to restrict write access to sensitive directories.

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