CVE-2026-42579

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.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*
cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*

History

18 Sep 2026, 13:18

Type Values Removed Values Added
References
  • {'url': 'https://access.redhat.com/errata/RHSA-2026:53806', 'source': '0b0ca135-0b70-47e7-9f44-1890c2a1c46c'}
  • () https://access.redhat.com/errata/RHSA-2026:53645 -
  • () https://access.redhat.com/errata/RHSA-2026:53646 -

17 Sep 2026, 12:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:49701 -

Information

Published : 2026-05-13 19:17

Updated : 2026-09-18 13:18


NVD link : CVE-2026-42579

Mitre link : CVE-2026-42579

CVE.ORG link : CVE-2026-42579


JSON object : View

Products Affected

netty

  • netty
CWE
CWE-20

Improper Input Validation

CWE-400

Uncontrolled Resource Consumption

CWE-626

Null Byte Interaction Error (Poison Null Byte)

CWE-1286

Improper Validation of Syntactic Correctness of Input