CVE-2026-106073
Published: October 24, 2026Last modified: November 1, 2026
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**.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 3.3 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | LOW |
| Integrity impact | NONE |
| Availability impact | NONE |
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | nodejs | Unknown (18.16.0-r0) |
| 25 LTS | nodejs | Unknown (22.16.0-r1) | |
| nodejs22 | Fixed (22.23.4-r0) | ||
| nodejs24 | Fixed (24.22.1-r0) | ||
| nodejs26 | Fixed (26.12.1-r0) | ||
| Stream | nodejs | Unknown (18.16.1-r0) | |
| nodejs22 | Fixed (22.23.4-r0) | ||
| nodejs24 | Fixed (24.22.1-r0) | ||
| nodejs26 | Fixed (26.12.1-r1) | ||
| Hardened Containers | 23 LTS | nodejs | Unknown (18.16.0-r0) |
| 25 LTS | nodejs | Unknown (22.16.0-r1) | |
| nodejs22 | Fixed (22.23.4-r0) | ||
| nodejs24 | Fixed (24.22.1-r0) | ||
| nodejs26 | Fixed (26.12.1-r0) | ||
| Stream | nodejs | Unknown (18.16.1-r0) | |
| nodejs22 | Fixed (22.23.4-r0) | ||
| nodejs24 | Fixed (24.22.1-r0) | ||
| nodejs26 | Fixed (26.12.1-r1) |