Medium [CVE-2026-106072] Authentication bypass via non-canonical IPv4 hostname verification
This medium-severity Red Hat Linux advisory covers CVE-2026-106072; related products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.
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Summary
Authentication bypass via non-canonical IPv4 hostname verification. Red Hat rates this moderate (CVSS 6.7).
Weakness: CWE-295.
Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat package: nodejs22; and 2 more.
Affected products named by the advisory: Red Hat package: nodejs24; Red Hat package: nodejs26.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists. Confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
Mitigation checklist
- Use only canonical IPv4 literals or DNS names in Node.js TLS client connect targets; reject octal, hex, dword, and shortened IPv4 spellings in application input (CME-1314 Input Canonicalization Before Security Decision: https://cmetaxonomy.org/entries/CME-1314.html). Where feasible, pin expected server certificates or public keys for sensitive outbound TLS (CME-404 Certificate Pinning: https://cmetaxonomy.org/entries/CME-404.html). Restrict which destinations Node.js workloads may reach with egress controls (CME-208: https://cmetaxonomy.org/entries/CME-208.html; CME-203: https://cmetaxonomy.org/entries/CME-203.html).
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
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