CVE-2026-105482 Node.js - Information Disclosure

Node.js 22.x, 24.x, and 26.x contain a hostname truncation vulnerability caused by NUL byte handling in dns.resolve*() and dns.reverse(), letting attackers bypass hostname validation, exploit requires crafted DNS queries.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
EPSS
0.37% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Information Disclosure
Impact
Information Disclosure
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
23 October 2026
Updated
25 October 2026
Weakness
CWE-284

Vendor fix

Update to the latest Node.js version where this issue is fixed.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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