---
title: "CVE-2026-105482: Node.js - Information Disclosure"
description: "Node.js 22.x, 24.x, and 26.x contain a hostname truncation vulnerability caused by NUL byte handling in dns.resolve*() and dns.reverse(), letting attackers bypass hostname validation, exploit requires crafted DNS queries."
url: https://panop.io/threat-heartbeat/CVE-2026-105482/
---

# CVE-2026-105482 Node.js - Information Disclosure

Node.js 22.x, 24.x, and 26.x contain a hostname truncation vulnerability caused by NUL byte handling in dns.resolve\*() and dns.reverse(), letting attackers bypass hostname validation, exploit requires crafted DNS queries.

CVSS base score 7.4 /10

High

CISA KEV

Not listed

Public exploit

Proof of concept available

EPSS

0.37% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-105482)

## Details

Type

Information Disclosure

Impact

Information Disclosure

CVSS vector

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

Published

23 October 2026

Updated

25 October 2026

Weakness

[CWE-284](https://cwe.mitre.org/data/definitions/284.html)

## Vendor fix

Update to the latest Node.js version where this issue is fixed.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-105482](https://nvd.nist.gov/vuln/detail/CVE-2026-105482)
- [https://nodejs.org/en/blog/vulnerability/october-2026-security-releases](https://nodejs.org/en/blog/vulnerability/october-2026-security-releases)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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