CVE-2026-56850mediumCWE-287

CVE-2026-56850: medium-severity vulnerability in nodejs node

Published

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33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 4.1epss 0.1%
from disclosure to weapon85 days
Published on NVDJul 30
1st PoC+85d
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**.
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N
Affected products
nodejs · node
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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