4.4

CVE-2026-56850: nodejs node Improper Authentication

Analyzed
AliasesALPINE-CVE-2026-56850UBUNTU-CVE-2026-56850DEBIAN-CVE-2026-56850
Published 30-07-2026Last modified 30-07-2026

Vulnerability summary

CVE-2026-56850 is a medium (CVSS 4.4) Improper Authentication vulnerability in nodejs node. EPSS estimates a 0.08% chance of exploitation in the next 30 days, higher than 0.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 4.1, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.4/10
010
Medium · v3.1 (NVD)
EPSS score
0.08%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 28 · Related 17
MGASA-2026-0359OPENSUSE-SU-2026:11439-1OPENSUSE-SU-2026:11440-1OPENSUSE-SU-2026:21545-1OPENSUSE-SU-2026:21546-1RHSA-2026:48273

Timeline

  1. 30-07-2026
    PublishedVulnerability first disclosed.
  2. 30-07-2026
    Last modifiedVulnerability information updated.

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**.

CVSS metrics

9 scores · 7 sources · 2 versions

EPSS trend

Probability

0.08%

Chance of exploitation in the next 30 days

Percentile

0%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.08% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard7 products
  • eco-nodejs-20.9.0All versions (No fix recorded)
  • eco-nodejs-22.16.0All versions (No fix recorded)
  • eco-nodejs-24.18.0All versions (No fix recorded)
  • nodejs-20All versions (No fix recorded)
  • nodejs-22< 22.23.2-r0
Wolfi4 products
  • nodejs-20All versions (No fix recorded)
  • nodejs-22< 22.23.2-r0
  • nodejs-24< 24.19.0-r0
  • nodejs-25All versions (No fix recorded)
Alpine2 products
  • nodejs< 22.23.2-r0 | < 24.18.1-r0
  • nodejs-current< 26.5.1-r0
Nodejs2 products
  • node26.5.0 | 24.18.0 | 22.23.1
  • node.js≥ 22.0, ≤ 22.23.1 | ≥ 24.0.0, ≤ 24.18.0 | ≥ 26.0.0, ≤ 26.5.0
Debian1 product
  • nodejs< 18.20.4+dfsg-1~deb12u3 | < 20.19.2+dfsg-1+deb13u3 | < 24.19.0+dfsg+~cs24.13.3-1
Ubuntu1 product
  • nodejsAll versions (No fix recorded)

6 vendors · 17 products

References

8 links