CVE-2026-106073: nodejs node vulnerability
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
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**.
Description quoted from the CVE record (assigned by hackerone, published 2026-10-23).
Weakness: CWE-284 Improper Access Control - Generic
How it can be exploited
Exploitable with local access with low attack complexity needing low privileges and no user interaction. Impact: confidentiality low, integrity none, availability none. CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Public exploit evidence (Exploit Observer)
Also known as: GHSA-w63p-v5c6-3pmw, SNYK-UPSTREAM-NODE-21427921
Exploit Observer links 1 piece of public exploit code or detection modules that name this CVE or one of its aliases.
Exploit code and modules (1)
Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.
- Code repository: https://github.com/completetech-security/node-cve-2026-106073-check
Vulnerability databases and vendor advisories (7)
Catalogue entries, not exploit evidence.
- Vulnerability database or vendor advisory: https://access.redhat.com/security/cve/cve-2026-106073
- Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-w63p-v5c6-3pmw
- Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-106073
- Vulnerability database or vendor advisory: https://osv.dev/vulnerability/UBUNTU-CVE-2026-106073
- Vulnerability database or vendor advisory: https://security.snyk.io/vuln/SNYK-UPSTREAM-NODE-21427921
- Vulnerability database or vendor advisory: https://ubuntu.com/security/CVE-2026-106073
- Vulnerability database or vendor advisory: https://www.suse.com/security/cve/CVE-2026-106073
9 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.
VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.
Live scores
- EPSS
- 0.003
low predicted chance of attack - VEDAS
- 0.502
some exploit evidence - On CISA KEV
- Not listed
- Detection rule
- None yet
Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish.
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| nodejs node | from 22.23.3 up to and including 22.23.3 from 24.22.0 up to and including 24.22.0 from 26.12.0 up to and including 26.12.0 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
No fixed version or vendor advisory is listed in the CVE record yet. Watch the vendor’s security page.
How to detect it
There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.
Advisories on this CVE
- Node.js October 2026 security release: Brotli RCE now exploited, plus TLS hostname bypasses (full advisory)
- Node.js October 2026 security release (10 CVEs) (21 Oct 2026)
References
Other references
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.