What is CVE-2026-106073?

CVE-2026-106073 is a low-severity vulnerability in Node.js Node, classified under Improper Access Control. CVSS score: 3.3/10. Published 2026-10-23.

How severe is CVE-2026-106073?

Low severity. CVSS v3 base score is 3.3 out of 10.

Vulnerability in Node.js Node

CVE-2026-106073

A flaw in Node.js Permission Model filesystem enforcement leaves `fs.realpathSync()` without the required read permission checks. This is an incomplete fix of CVE-2026-21715, which only covered `fs.realpathSync.native()`. As a result, code running under `--permission` with restricted `--allow-fs-read` can still use `fs.realpathSync()` to check file existence, resolve symlink targets, and enumerate filesystem paths outside of permitted directories. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.

Published 2026-10-23 · last modified 2026-10-23.

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

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Node.js Node

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

nodejs.org/en/blog/vulnerability/october-2026-security-releases

Frequently asked questions

What is CVE-2026-106073?: CVE-2026-106073 is a low-severity vulnerability in Node.js Node, classified under Improper Access Control. CVSS score: 3.3/10. Published 2026-10-23.
How severe is CVE-2026-106073?: Low severity. CVSS v3 base score is 3.3 out of 10.