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CVE-2026-48930

A flaw in Node.js TLS hostname handling can cause Embedded-nul hostnames can lead to silent authority rebinding due to c-string truncation…

Medium5.6EPSS 0.32%
Published
Updated
Reserved
Assigned by
hackerone

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**.

Scores

CVSS scores of CVE-2026-48930, by who scored it
Scored byCVSSScoreVector
hackeroneCNA (assigner)3.0Medium5.6CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
NVDNVD · Analyzed3.1Critical9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.32% · top 75% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.6.

Weakness

Affected products

  • nodejs · node

    • affected 22.22.3 – ≤ 22.22.3
    • affected 24.16.0 – ≤ 24.16.0
    • affected 26.3.0 – ≤ 26.3.0

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .