CVE-2026-56850 Affecting nodejs package, versions <20.19.2+dfsg-1+deb13u3


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.08% (1st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ECHOLATEST-NODEJS-18427108
  • published30 Jul 2026
  • disclosed30 Jul 2026

Introduced: 30 Jul 2026

CVE-2026-56850  (opens in a new tab)

How to fix?

Upgrade Echo:latest nodejs to version 20.19.2+dfsg-1+deb13u3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nodejs package and not the nodejs package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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 Base Scores

version 3.1