CVE-2026-56850
nodejs node
MEDIUM 4.1
At a glance
- Source
- NVD
- EPSS
- EPSS 0.08 % · percentile 0 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- hackerone
- NVD status
- Analyzed
Description
A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS (mTLS) client identities to be reused across requests configured with different client certificates. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.
Weaknesses (CWE)
- CWE-287 — Improper Authentication
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 4.1 | CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N | hackerone |
| CVSS 3.1 | MEDIUM 4.4 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | MEDIUM 4.1 | CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N | NVD · support@hackerone.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-51020
- GCVE · GCVE-0-2026-56850
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1345 — Multiples vulnérabilités dans les produits StormShield · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0947 — Multiples vulnérabilités dans Node.js · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*≥ 22.0 ≤ 22.23.1cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*≥ 24.0.0 ≤ 24.18.0cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*≥ 26.0.0 ≤ 26.5.0
Affected products
| Product | Versions |
|---|---|
| nodejs · node | affected 26.5.0 ≤ 26.5.0 ; affected 24.18.0 ≤ 24.18.0 ; affected 22.23.1 ≤ 22.23.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |