Bug 2559941

Summary: CVE-2026-105482 nodejs22: nodejs: dns.resolve truncates hostnames containing a NUL character [fedora-43]
Product: [Fedora] Fedora Reporter: Srikanth Balasubramanian <sbalasub>
Component: nodejs22Assignee: Jan Staněk <jstanek>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: 43CC: aradchen, jstanek, tjuhasz
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["c90f17b5-82fc-4891-add3-5abaa6eb2f37"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2559875    

Description Srikanth Balasubramanian 2026-10-23 15:36:47 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A flaw was found in Node.js. The callback- and promise-based dns.resolve APIs did not reject hostnames containing an embedded NUL character. Because c-ares treats the name as a C string, a name such as example.com\0.trusted.corp is truncated to example.com, so the resolver returns records for an unintended hostname.