CVE-2026-48930

Aliases:DEBIAN-CVE-2026-48930ALPINE-CVE-2026-48930
Advisory lineage Upstream: 0 Downstream: 28
Analyzed
Published: 26 Jun 2026, 01:14
Last modified:26 Jun 2026, 13:37

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (nvd)
EPSS Score
0.32% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

26 Jun 2026, 01:14
Published
Vulnerability first disclosed
26 Jun 2026, 13:37
Last Modified
Vulnerability information updated

Description

A flaw in Node.js TLS hostname handling can cause Embedded-nul hostnames can lead to silent authority rebinding due to c-string truncation in resolver bindings. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • v3.0•MEDIUM•Score: 5.6CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS Trends

Current EPSS score: 0.32%• Percentile: 26%

Techniques & Countermeasures

  • CWE-284•Improper Access Control

    The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Systems

  • alpine•nodejs

    < 22.23.0-r0 | < 22.23.0-r0 | < 24.17.0-r0 | < 24.17.0-r0

  • debian•nodejs

    all | all | all | < 24.17.0+dfsg+~cs24.13.2-1

  • nodejs•node

    22.22.3 | 24.16.0 | 26.3.0

  • nodejs•node.js

    22.22.3 | 24.16.0 | 26.3.0

References (3)