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CVE-2026-45674

Netty Vulnerable to DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records

CRITICAL
10
CVSS Score
Published: June 12, 2026 at 02:17 PM UTC
Updated: September 18, 2026 at 02:29 PM UTC
8 products affected across 2 vendorsNettyFuseJBoss Enterprise Application Platform Expansion Pack

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Severity
CRITICAL10
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's DnsResolveContext fails to validate the origin (bailiwick) of CNAME records in DNS responses. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Netty· Nettymaven
95%
v < 4.1.135v < 4.1.135.Finalv < 4.2.15.Final4.2.0 ≤ v < 4.2.15
Affected range stops below 4.1.135, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.1.135.Final, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.2.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.2.15.Final, so it looks safe — our inference, not a vendor statement
Build of Apache Camel for Quarkus· Red Hatrpm
60%
3
Build of Apache Camel - HawtIO· Red Hatrpm
60%
4
Build of Apicurio Registry· Red Hatrpm
60%
3
Build of Debezium· Red Hatrpm
60%
3
Fuse· Red Hatrpm
60%
7
JBoss Enterprise Application Platform Expansion Pack· Red Hatrpm
60%
All versions
OpenShift Serverless· Red Hatrpm
60%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (23)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/netty/netty/security/advisories/GHSA-676x-f7gg-47vc
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/netty/netty/releases/tag/netty-4.1.135.Final
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/netty/netty/releases/tag/netty-4.2.15.Final
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:26017
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:26018
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:26586
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/security/cve/CVE-2026-45674
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://bugzilla.redhat.com/show_bug.cgi?id=2488400

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

10CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-345CWE-346

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