Vulnerability DatabaseCVE-2026-56850
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CVE-2026-56850
Published:July 30, 2026
Updated:August 04, 2026
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.
Affected Packages
https://github.com/nodejs/node.git (GITHUB):
Affected version(s) >=v26.0.0 <v26.5.1
Fix Suggestion:
Update to version v26.5.1
https://github.com/nodejs/node.git (GITHUB):
Affected version(s) >=v24.0.0 <v24.18.1
Fix Suggestion:
Update to version v24.18.1
https://github.com/nodejs/node.git (GITHUB):
Affected version(s) >=v22.0.0 <v22.23.2
Fix Suggestion:
Update to version v22.23.2
Additional Notes
The description of this vulnerability differs from MITRE.
Related Resources (1)
https://nodejs.org/en/blog/vulnerability/july-2026-security-releases
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CVSS v4
Base Score:
5.6
Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.1
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Improper Authentication
CWE-287
EPSS
Base Score:
0.08