CVE-2026-105482
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.
CVE-2026-105482
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-105482
node
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "nodejs",
"product": "node",
"versions": [
{
"status": "affected",
"version": "22.23.3",
"versionType": "semver",
"lessThanOrEqual": "22.23.3"
},
{
"status": "affected",
"version": "24.22.0",
"versionType": "semver",
"lessThanOrEqual": "24.22.0"
},
{
"status": "affected",
"version": "26.12.0",
"versionType": "semver",
"lessThanOrEqual": "26.12.0"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-105482
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #53067 · Revision 1
- Added to Heist Feed
- Publisher date