🛡️ CVE-2026-56850 on Alpine — nodejs

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

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.

Distribution advisory

This page covers CVE-2026-56850 as tracked by Alpine, for the package nodejs. The fix is available in version 24.18.1-r0; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity high, availability none.

Weakness class

ALPINE-CVE-2026-56850 is classified as CWE-287: Improper Authentication. The identity of the caller is not established correctly, so an attacker can act as another user.

Affected software

ALPINE-CVE-2026-56850 is recorded against 1 package.

nodejs (fixed in 24.18.1-r0)

Timeline and source

Published on 30 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security.alpinelinux.org (Advisory)

Details

Severity Unknown

CVSS Score N/A

CVSS Vector CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2026-07-30

Updated 2026-08-12

Modified 2026-07-30

Fix URL N/A

Affected Packages

Software	From version	Fixed in
nodejs	—	24.18.1-r0

References

ADVISORY https://security.alpinelinux.org/vuln/CVE-2026-56850

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