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**.
History

Fri, 07 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
Title nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw
First Time appeared Redhat
Redhat hummingbird
Weaknesses CWE-551
CPEs cpe:/a:redhat:hummingbird:1
Vendors & Products Redhat
Redhat hummingbird
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N'}

threat_severity

Important


Tue, 04 Aug 2026 12:15:00 +0000

Type Values Removed Values Added
Title Node.js Filesystem Permission Over‑Grant via Radix‑Tree Prefix Boundary Bypass

Fri, 31 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Title Node.js Filesystem Permission Over‑Grant via Radix‑Tree Prefix Boundary Bypass

Thu, 30 Jul 2026 13:45:00 +0000

Type Values Removed Values Added
First Time appeared Nodejs
Nodejs nodejs
Vendors & Products Nodejs
Nodejs nodejs

Thu, 30 Jul 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 30 Jul 2026 06:15:00 +0000

Type Values Removed Values Added
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**.
Weaknesses CWE-284
References
Metrics cvssV3_0

{'score': 7.5, 'vector': 'CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published: 2026-07-30T06:02:50.095Z

Updated: 2026-07-31T03:55:48.673Z

Reserved: 2026-06-27T15:00:00.780Z

Link: CVE-2026-58043

cve-icon Vulnrichment

Updated: 2026-07-30T12:36:07.155Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-07-30T06:25:55.310

Modified: 2026-07-31T04:17:23.737

Link: CVE-2026-58043

cve-icon Redhat

Severity : Important

Publid Date: 2026-07-30T06:02:50Z

Links: CVE-2026-58043 - Bugzilla