CVEvulnerability

CVE-2026-44249

8.1 HIGH Published 2026-06-11 Modified 2026-09-18 Official page ↗
Status
Modified
Published
2026-06-11
Last modified
2026-09-18
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-1287, CWE-284, CWE-697

Description

Netty is a network application framework for development of protocol servers and clients. In netty-handler prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can bypass IPv6 subnet rules due to an incorrect masking operation in IpSubnetFilterRule.compareTo(). Valid public IP addresses can bypass the restrictions. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

Affected configurations

• netty netty (< 4.1.135) • netty netty (>= 4.2.0 < 4.2.15)

Related

Weakness · CWE (3)

  • CWE-1287 Improper Validation of Specified Type of Input weakness
  • CWE-284 Improper Access Control weakness
  • CWE-697 Incorrect Comparison weakness

References