GHSA-3qp7-7mw8-wx86

Suggest an improvement
Source
https://github.com/advisories/GHSA-3qp7-7mw8-wx86
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-3qp7-7mw8-wx86/GHSA-3qp7-7mw8-wx86.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-3qp7-7mw8-wx86
Aliases
  • CVE-2026-44249
Downstream
Related
Published
2026-06-08T19:00:33Z
Modified
2026-06-12T19:30:08.471567878Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Netty has an IPv6 Subnet Filter Bypass via Incorrect Comparator Masking
Details

Summary

An attacker can bypass IPv6 subnet rules due to an incorrect masking operation in IpSubnetFilterRule.compareTo(). Valid public IP addresses can bypass the restrictions.

Details

io.netty.handler.ipfilter.IpSubnetFilterRule#compareTo(java.net.InetSocketAddress) method performs a bitwise AND between the incoming IP address and the configured networkAddress, instead of the subnetMask.

Impact

Access Control Bypass. Attacker can bypass IpSubnetFilter IPv6 access controls.

Database specific 
{
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-08T19:00:33Z",
    "nvd_published_at": "2026-06-11T22:16:56Z",
    "severity": "HIGH",
    "cwe_ids": [
        "CWE-284",
        "CWE-697"
    ]
}
References

Affected packages

Maven / io.netty:netty-handler

Package

Name
io.netty:netty-handler
View open source insights on deps.dev
Purl
pkg:maven/io.netty/netty-handler

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.2.0.Final
Fixed
4.2.15.Final

Affected versions

4.*
4.2.0.Final
4.2.1.Final
4.2.2.Final
4.2.3.Final
4.2.4.Final
4.2.5.Final
4.2.6.Final
4.2.7.Final
4.2.8.Final
4.2.9.Final
4.2.10.Final
4.2.11.Final
4.2.12.Final
4.2.13.Final
4.2.14.Final

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-3qp7-7mw8-wx86/GHSA-3qp7-7mw8-wx86.json"
last_known_affected_version_range 
"<= 4.2.14.Final"

Maven / io.netty:netty-handler

Package

Name
io.netty:netty-handler
View open source insights on deps.dev
Purl
pkg:maven/io.netty/netty-handler

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.1.135.Final

Affected versions

4.*
4.0.0.Alpha1
4.0.0.Alpha2
4.0.0.Alpha3
4.0.0.Alpha4
4.0.0.Alpha5
4.0.0.Alpha6
4.0.0.Alpha7
4.0.0.Alpha8
4.0.0.Beta1
4.0.0.Beta2
4.0.0.Beta3
4.0.0.CR1
4.0.0.CR2
4.0.0.CR3
4.0.0.CR4
4.0.0.CR5
4.0.0.CR6
4.0.0.CR7
4.0.0.CR8
4.0.0.CR9
4.0.0.Final
4.0.1.Final
4.0.2.Final
4.0.3.Final
4.0.4.Final
4.0.5.Final
4.0.6.Final
4.0.7.Final
4.0.8.Final
4.0.9.Final
4.0.10.Final
4.0.11.Final
4.0.12.Final
4.0.13.Final
4.0.14.Beta1
4.0.14.Final
4.0.15.Final
4.0.16.Final
4.0.17.Final
4.0.18.Final
4.0.19.Final
4.0.20.Final
4.0.21.Final
4.0.22.Final
4.0.23.Final
4.0.24.Final
4.0.25.Final
4.0.26.Final
4.0.27.Final
4.0.28.Final
4.0.29.Final
4.0.30.Final
4.0.31.Final
4.0.32.Final
4.0.33.Final
4.0.34.Final
4.0.35.Final
4.0.36.Final
4.0.37.Final
4.0.38.Final
4.0.39.Final
4.0.40.Final
4.0.41.Final
4.0.42.Final
4.0.43.Final
4.0.44.Final
4.0.45.Final
4.0.46.Final
4.0.47.Final
4.0.48.Final
4.0.49.Final
4.0.50.Final
4.0.51.Final
4.0.52.Final
4.0.53.Final
4.0.54.Final
4.0.55.Final
4.0.56.Final
4.1.0.Beta1
4.1.0.Beta2
4.1.0.Beta3
4.1.0.Beta4
4.1.0.Beta5
4.1.0.Beta6
4.1.0.Beta7
4.1.0.Beta8
4.1.0.CR1
4.1.0.CR2
4.1.0.CR3
4.1.0.CR4
4.1.0.CR5
4.1.0.CR6
4.1.0.CR7
4.1.0.Final
4.1.1.Final
4.1.2.Final
4.1.3.Final
4.1.4.Final
4.1.5.Final
4.1.6.Final
4.1.7.Final
4.1.8.Final
4.1.9.Final
4.1.10.Final
4.1.11.Final
4.1.12.Final
4.1.13.Final
4.1.14.Final
4.1.15.Final
4.1.16.Final
4.1.17.Final
4.1.18.Final
4.1.19.Final
4.1.20.Final
4.1.21.Final
4.1.22.Final
4.1.23.Final
4.1.24.Final
4.1.25.Final
4.1.26.Final
4.1.27.Final
4.1.28.Final
4.1.29.Final
4.1.30.Final
4.1.31.Final
4.1.32.Final
4.1.33.Final
4.1.34.Final
4.1.35.Final
4.1.36.Final
4.1.37.Final
4.1.38.Final
4.1.39.Final
4.1.40.Final
4.1.41.Final
4.1.42.Final
4.1.43.Final
4.1.44.Final
4.1.45.Final
4.1.46.Final
4.1.47.Final
4.1.48.Final
4.1.49.Final
4.1.50.Final
4.1.51.Final
4.1.52.Final
4.1.53.Final
4.1.54.Final
4.1.55.Final
4.1.56.Final
4.1.57.Final
4.1.58.Final
4.1.59.Final
4.1.60.Final
4.1.61.Final
4.1.62.Final
4.1.63.Final
4.1.64.Final
4.1.65.Final
4.1.66.Final
4.1.67.Final
4.1.68.Final
4.1.69.Final
4.1.70.Final
4.1.71.Final
4.1.72.Final
4.1.73.Final
4.1.74.Final
4.1.75.Final
4.1.76.Final
4.1.77.Final
4.1.78.Final
4.1.79.Final
4.1.80.Final
4.1.81.Final
4.1.82.Final
4.1.83.Final
4.1.84.Final
4.1.85.Final
4.1.86.Final
4.1.87.Final
4.1.88.Final
4.1.89.Final
4.1.90.Final
4.1.91.Final
4.1.92.Final
4.1.93.Final
4.1.94.Final
4.1.95.Final
4.1.96.Final
4.1.97.Final
4.1.98.Final
4.1.99.Final
4.1.100.Final
4.1.101.Final
4.1.102.Final
4.1.103.Final
4.1.104.Final
4.1.105.Final
4.1.106.Final
4.1.107.Final
4.1.108.Final
4.1.109.Final
4.1.110.Final
4.1.111.Final
4.1.112.Final
4.1.113.Final
4.1.114.Final
4.1.115.Final
4.1.116.Final
4.1.117.Final
4.1.118.Final
4.1.119.Final
4.1.120.Final
4.1.121.Final
4.1.122.Final
4.1.123.Final
4.1.124.Final
4.1.125.Final
4.1.126.Final
4.1.127.Final
4.1.128.Final
4.1.129.Final
4.1.130.Final
4.1.131.Final
4.1.132.Final
4.1.133.Final
4.1.134.Final

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-3qp7-7mw8-wx86/GHSA-3qp7-7mw8-wx86.json"
last_known_affected_version_range 
"<= 4.1.134.Final"