CVE-2026-42579 (GCVE-0-2026-42579)
Vulnerability from cvelistv5
Published
2026-05-13 18:01
Modified
2026-08-21 12:13
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-20 - Improper Input Validation
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-626 - Null Byte Interaction Error (Poison Null Byte)
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's DNS codec does not enforce RFC 1035 domain name constraints during either encoding or decoding. This creates a bidirectional attack surface: malicious DNS responses can exploit the decoder, and user-influenced hostnames can exploit the encoder. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.
References
Impacted products
Vendor Product Version
netty netty Version: >= 4.2.0.Alpha1, < 4.2.13.Final
Version: < 4.1.133.Final
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