CVE-2026-48936
Analyzed Analyzed - Analysis Complete
Permission API Misconfiguration Enables Unauthorized Local Server in Node.js

Publication date: 2026-06-26

Last updated on: 2026-06-26

Assigner: HackerOne

Description
A flaw in Node.js Permission API can cause a local server to be started (via a Unix domain socket), even without the `--allow-net` permission. This vulnerability affects one supported release line: **Node.js 26**.
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Meta Information
Published
2026-06-26
Last Modified
2026-06-26
Generated
2026-06-27
AI Q&A
2026-06-26
EPSS Evaluated
2026-06-26
NVD
CVE-2026-48936
EUVD
EUVD-2026-39611
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
nodejs node.js 26.3.0
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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Impact Analysis

The vulnerability could allow a local attacker with limited permissions to start a local server via a Unix domain socket without the usual network permissions.

This may lead to unintended local service exposure or interference, potentially impacting system integrity or local security.

Executive Summary

This vulnerability is a flaw in the Node.js Permission API that allows a local server to be started using a Unix domain socket even if the user does not have the `--allow-net` permission enabled.

It affects the Node.js 26 release line.

Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

Mitigation Strategies

To mitigate this vulnerability, users should update Node.js 26 to the latest patched version where the flaw in the Permission API has been fixed.

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