Vulnerability in Node.js Node

CVE-2026-58039

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**.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS 0.002, 4.6th percentile (scored ); unchanged over 30 days. About EPSS.

Affected products

Weakness classification (CWE)

Public exploits and proof-of-concept code

5 public repositories with exploit or proof-of-concept code for this CVE:

  • CompleTech-Security/node-cve-2026-58039-check (last pushed 2026-10-26): Offline Node.js evidence checker for CVE-2026-58039: Permission Model process-report filesystem bypass. Single-file Python; JSON/CSV/HTML reports; no exploit payloads.
  • CompleteTech-Security/node-cve-2026-58039-check (last pushed 2026-10-26): Offline Node.js evidence checker for CVE-2026-58039: Permission Model process-report filesystem bypass. Single-file Python; JSON/CSV/HTML reports; no exploit payloads.
  • CompleTetech-Security/node-cve-2026-58039-check (last pushed 2026-10-26): Offline Node.js evidence checker for CVE-2026-58039: Permission Model process-report filesystem bypass. Single-file Python; JSON/CSV/HTML reports; no exploit payloads.
  • completetech-security/node-cve-2026-58039-check (last pushed 2026-10-24): Standalone defensive checker project for CVE-2026-58039: Node.js: Permission Model process-report filesystem bypass. One exploit per repository; implementation pending.
  • CompleteTech-LLC/node-cve-2026-58039-check (last pushed 2026-10-24): Standalone defensive checker project for CVE-2026-58039: Node.js: Permission Model process-report filesystem bypass. One exploit per repository; implementation pending.

References

This CVE has public exploit evidence. See the latest CVEs with public exploits.