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VulnerabilityPublished

CVE-2026-123871: nodejs node · Information Exposure Through an Error Message

Affects nodejs nodeSource CVE Database V5

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Mentioned vulnerabilities

Not known to be exploited · CVSS 6.2 Medium · fixed in 26.13.1 : update nodejs node when convenient.

Data as of 11 Nov 2026, 18:47 UTC

CVSS 3.0 base score
6.2Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (openjs)CVSS 3.06.2
Patch
Available – fixed in 26.13.1, 24.22.3, 22.23.5
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Upgrade nodejs node to 26.13.1, 24.22.3 or 22.23.5.

Affected software

ProductAffectedFixed in
nodejsnodeAffected
  • >=25.0.0 <26.13.1
Fixed in
  • 26.13.1
nodejsnodeAffected
  • >=23.0.0 <24.22.3
Fixed in
  • 24.22.3
nodejsnodeAffected
  • <22.23.5
Fixed in
  • 22.23.5

AI-suggested

Fixed versions are available: Node.js 22.23.5, 24.22.3, and 26.13.1. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation steps are indicated or required beyond applying the official patches.

Description

CVE-2026-123871 is an information exposure vulnerability in Node.js where proxy credentials are leaked in ERR_PROXY_INVALID_CONFIG error messages. Although a previous fix redacted credentials from ProxyConfig.href, this vulnerability affects four other error paths that still expose raw proxy URLs including credentials. These error messages can be emitted to stderr, container logs, and crash reporting services, potentially exposing sensitive proxy credentials. The issue affects Node.js versions 22.x, 24.x, and 26.x prior to specific fixed releases.

References

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