# CVE-2026-105482: CVE-2026-105482

Status: published. Published: 2026-10-23. Updated: 2026-11-02.

A flaw in Node.js DNS resolution allows hostnames containing a NUL byte to be silently truncated by the dns.resolve*() functions and dns.reverse(). This is an incomplete fix of CVE-2026-48930, which only covered dns.lookup() and the net/tls host options.

Because the name is passed to c-ares as a C string, resolving attacker.example\0.trusted.example queries attacker.example and returns its records without any error. Applications that validate a hostname, for example against a domain allowlist, and then resolve it with dns.resolve*() can act on records for a different name than the one they validated.

This vulnerability affects Node.js 26.x, 24.x, and 22.x.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- nodejs / node: ≥ 22.23.3; ≤ 22.23.3 (affected, semver); ≥ 24.22.0; ≤ 24.22.0 (affected, semver); ≥ 26.12.0; ≤ 26.12.0 (affected, semver). Source: CNA: hackerone

## Severity and prioritization

- CVSS 3.0: 7.4 (high); CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N; source: CNA: hackerone

- CVSS 3.0: 7.4 (high); CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N; source: NVD: support@hackerone.com

- CISA KEV: No listing in collected sources

- EPSS: 0.47% as of 2026-11-02; percentile 40.53%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-284

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://nodejs.org/en/blog/vulnerability/october-2026-security-releases (CNA: hackerone)

- https://nodejs.org/en/blog/vulnerability/october-2026-security-releases (support@hackerone.com)

## Provenance

- CNA: hackerone: https://www.cve.org/CVERecord?id=CVE-2026-105482; retrieved 2026-11-02; source updated 2026-11-02

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-105482; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-105482; retrieved 2026-11-02; source updated Not reported

Revision: 0a2058e37e29ad0570635f94b94afd1886c161a69a91b894d05606280dd31dce

Canonical: https://y2.dev/cve/CVE-2026-105482

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Collected public records only. Check source status for coverage and freshness.