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4.1 Medium

CVE-2026-56850 A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS (mTLS)…

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**.

Affected products and versions

Product Affected versions Fixed in
Node 26.5.0 No fix stated
Node 24.18.0 No fix stated
Node 22.23.1 No fix stated

References

Timeline

  1. Published
  2. Last modified

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