{"id":"CVE-2026-105482","title":"nodejs: nodejs: dns.resolve truncates hostnames containing a NUL character (CVE-2026-105482)","summary":"A flaw was found in the Node.js DNS resolver APIs. Hostnames passed to dns.resolve that contain an embedded NUL character can be truncated when processed by c-ares. An attacker who can supply such a name may cause the application to resolv…","severity":"high","cvss":7.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","cvssSource":"vendor","cwe":["CWE-158","CWE-284"],"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","affected":["enterprise_linux 10","enterprise_linux 8","enterprise_linux 9"],"published":"2026-10-21","updated":"2026-10-23","sourceUpdated":"2026-10-23T18:19:21+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105482.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105482.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-105482"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2559875"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-105482"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105482"},{"url":"https://nodejs.org/en/blog/release/v22.23.4"},{"url":"https://nodejs.org/en/blog/vulnerability/october-2026-security-releases"}],"tags":["csaf","vex","red-hat","exploit-available","cve.org"],"exploits":{"github":2,"githubRepos":["https://github.com/CaterMaoZi/CVE-2026-105482-POC","https://github.com/completetech-security/node-cve-2026-105482-check"],"checkedAt":"2026-10-24T12:26:10.186Z"},"exploitAvailable":true,"ingestedAt":"2026-10-23T16:31:11.318Z","slug":"CVE-2026-105482","body":"## Overview\n\nA flaw was found in the Node.js DNS resolver APIs. Hostnames passed to dns.resolve that contain an embedded NUL character can be truncated when processed by c-ares. An attacker who can supply such a name may cause the application to resolve and act on an unintended hostname.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105482.json)\n\n**nodejs: nodejs: dns.resolve truncates hostnames containing a NUL character** — rated Important by Red Hat. Released 2026-10-21, updated 2026-10-23.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n\nNot affected:\n\n- Red Hat Hardened Images\n\n## Remediation\n\nAffected\n\nWorkarounds / mitigations:\n\n- To mitigate, do not pass untrusted strings into dns.resolve; reject hostnames that contain embedded NUL bytes before DNS resolution. Limit which components may perform DNS lookups on attacker-influenced names, and restrict network reachability of those services.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":40.7,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[]}