CVE-2026-105482

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-105482
StatePUBLISHED
Assignerhackerone
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-23 17:17:19 UTC
Updated2026-11-02 16:17:23 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.0 7.4 HIGH from [email protected]

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

EPSS: 0.004680000 probability, percentile 0.405270000 (date 2026-11-02)

Problem Types: CWE-284 | CWE-284 CWE-284 Improper Access Control - Generic

VersionSourceTypeScoreSeverityVector
3.0[email protected]Secondary7.4HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
3.0CNADECLARED7.4HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Nodejs Node affected 22.23.3 22.23.3 semver Not specified
CNA Nodejs Node affected 24.22.0 24.22.0 semver Not specified
CNA Nodejs Node affected 26.12.0 26.12.0 semver Not specified

References

ReferenceSourceLinkTags
nodejs.org/en/blog/vulnerability/october-2026-security-releases [email protected] nodejs.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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