CVSS 3.1
10.0 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:NCVE-2026-45674
Critical (10.0) in netty netty. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in io.netty:netty-resolver-dns 4.1.135.Final, 4.2.15.Final.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-345, CWE-346
- Published
- Modified
- Record from
- the NVD, synced
Affected
- netty:netty
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-676x-f7gg-47vc | Maven | io.netty:netty-resolver-dns | >=4.2.0.Final <4.2.15.Final | 4.2.15.Final |
| GHSA-676x-f7gg-47vc | Maven | io.netty:netty-resolver-dns | <4.1.135.Final | 4.1.135.Final |