ALPINE-CVE-2026-105482

ALPINE-CVE-2026-105482

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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.

CVSS 7.4 · Hoch · Korrektur verfügbar

Veröffentlicht

2026-10-23T17:17:19.427Z

Aktualisiert

2026-10-24T09:30:02.680052584Z

Technologie-Stack: system

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