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**.
Published: 2026-07-30
Score: 4.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 30 Jul 2026 13:45:00 +0000

Type Values Removed Values Added
First Time appeared Nodejs
Nodejs nodejs
Vendors & Products Nodejs
Nodejs nodejs

Thu, 30 Jul 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 30 Jul 2026 06:15:00 +0000

Type Values Removed Values Added
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-287
References
Metrics cvssV3_0

{'score': 4.1, 'vector': 'CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N'}

Subscriptions

Nodejs Nodejs
cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-07-30T12:37:10.100Z

Reserved: 2026-06-23T15:00:03.632Z

Link: CVE-2026-56850

cve-icon Vulnrichment

Updated: 2026-07-30T12:36:54.201Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-30T13:30:04Z

Weaknesses