UpHeron
All vulnerabilities

Servers and applications

CVE-2026-56850

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**.

Severity
Medium 4.4
Published
30 Jul 2026
Last changed
25 Aug 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
Node.jsServers and applications · cpe:a:nodejs:node.js
  • From 22.0 up to 22.23.1
  • From 24.0.0 up to 24.18.0
  • From 26.0.0 up to 26.5.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-56850
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-56850