CVE-2026-106073

CVE Details

Release Date:	2026-10-23
Impact:	Low	What is this?

Description

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**.

See more information about CVE-2026-106073 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	3.3
Vector String:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Version:	3.1
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	Low
Integrity Impact:	None
Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (nodejs)	ELSA-2026-92376	2026-10-30
Oracle Linux version 8 (nodejs-nodemon)	ELSA-2026-92376	2026-10-30
Oracle Linux version 8 (nodejs-packaging)	ELSA-2026-92376	2026-10-30
Oracle Linux version 9 (nodejs)	ELSA-2026-92378	2026-10-30
Oracle Linux version 9 (nodejs-nodemon)	ELSA-2026-92378	2026-10-30
Oracle Linux version 9 (nodejs-packaging)	ELSA-2026-92378	2026-10-30