Bug 2509179 (CVE-2026-56850) - CVE-2026-56850 nodejs: Node.js: mTLS client identities can be reused due to HTTPS Agent connection flaw
Summary: CVE-2026-56850 nodejs: Node.js: mTLS client identities can be reused due to H...
Keywords:
Status: NEW
Alias: CVE-2026-56850
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-30 07:07 UTC by OSIDB Bzimport
Modified: 2026-07-30 15:11 UTC (History)
5 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-07-30 07:07:57 UTC 
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**.
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