CVE-2026-105482 (GCVE-0-2026-105482)
Vulnerability from cvelistv5
Published
2026-10-23 16:15
Modified
2026-10-23 16:15
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-284 - Improper Access Control - Generic
Summary
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.
References
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "node",
"vendor": "nodejs",
"versions": [
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"status": "affected",
"version": "22.23.3",
"versionType": "semver"
},
{
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"status": "affected",
"version": "24.22.0",
"versionType": "semver"
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{
"lessThanOrEqual": "26.12.0",
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"version": "26.12.0",
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"value": "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.\r\n\r\nBecause 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.\r\n\r\nThis vulnerability affects Node.js 26.x, 24.x, and 22.x."
}
],
"metrics": [
{
"cvssV3_0": {
"baseScore": 7.4,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.0"
}
}
],
"problemTypes": [
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"descriptions": [
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"description": "CWE-284 Improper Access Control - Generic",
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"providerMetadata": {
"dateUpdated": "2026-10-23T16:15:05.831Z",
"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
"shortName": "hackerone"
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"references": [
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"url": "https://nodejs.org/en/blog/vulnerability/october-2026-security-releases"
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"cveMetadata": {
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"cveId": "CVE-2026-105482",
"datePublished": "2026-10-23T16:15:05.831Z",
"dateReserved": "2026-10-05T15:00:00.729Z",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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