CVE-2026-45674
Netty Vulnerable to DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records
- State
- Published
- Severity
- 8.7 High
- Published
- Jun 12, 2026
- Updated
- Sep 18, 2026
- Reserved
- May 12, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.7 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N | GitHub_M |
| 3.1 | 8.7 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
nettynetty |
|
References
- https://github.com/netty/netty/security/advisories/GHSA-676x-f7gg-47vc
- https://github.com/netty/netty/releases/tag/netty-4.1.135.Final
- https://github.com/netty/netty/releases/tag/netty-4.2.15.Final
- https://access.redhat.com/security/cve/CVE-2026-45674vdb-entry
- RHBZ#2488400issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45674.json
- https://access.redhat.com/errata/RHSA-2026:49700vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:53644vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:53645vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:48151vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:53646vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:26586vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:41951vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:50085vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:49701vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:65126vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:62260vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:37390vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:26018vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:26017vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:34608vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:54435vendor-advisory
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