GHSA-676x-f7gg-47vc

Suggest an improvement
Source
https://github.com/advisories/GHSA-676x-f7gg-47vc
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-676x-f7gg-47vc/GHSA-676x-f7gg-47vc.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-676x-f7gg-47vc
Aliases
  • CVE-2026-45674
Downstream
Related
Published
2026-06-08T23:02:26Z
Modified
2026-06-12T19:45:11.461282859Z
Severity
  • 8.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N CVSS Calculator
Summary
Netty Vulnerable to DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records
Details

Summary

Netty's DnsResolveContext fails to validate the origin (bailiwick) of CNAME records in DNS responses.

Details

In io.netty.resolver.dns.DnsResolveContext#buildAliasMap, the resolver processes the ANSWER section of a DNS response and blindly caches all CNAME records it finds.

According to https://datatracker.ietf.org/doc/html/rfc5452#section-6 

Care must be taken to only accept
   data if it is known that the originator is authoritative for the
   QNAME or a parent of the QNAME.
   One very simple way to achieve this is to only accept data if it is
   part of the domain for which the query was intended.

Impact

DNS Cache Poisoning (Bailiwick Bypass). Any application using Netty's DNS resolver is impacted.

Database specific 
{
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-08T23:02:26Z",
    "nvd_published_at": "2026-06-12T15:16:27Z",
    "severity": "HIGH",
    "cwe_ids": [
        "CWE-345"
    ]
}
References

Affected packages

Maven / io.netty:netty-resolver-dns

Package

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

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-676x-f7gg-47vc/GHSA-676x-f7gg-47vc.json"
last_known_affected_version_range 
"<= 4.2.14.Final"

Maven / io.netty:netty-resolver-dns

Package

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

Affected ranges

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

Affected versions

4.*
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-676x-f7gg-47vc/GHSA-676x-f7gg-47vc.json"
last_known_affected_version_range 
"<= 4.1.134.Final"