{"cve":"CVE-2026-45674","nvd":{"published":"2026-06-12T15:16:27.550","modified":"2026-09-18T13:18:26.863","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N","score":10.0},"cwes":["CWE-345","CWE-346"],"references":["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://github.com/netty/netty/security/advisories/GHSA-676x-f7gg-47vc","https://access.redhat.com/errata/RHSA-2026:26017","https://access.redhat.com/errata/RHSA-2026:26018"],"products":["netty:netty"],"source":"nvd","synced_at":"2026-10-19T22:38:48.522727527+00:00"},"epss":{"cve":"CVE-2026-45674","score":0.00292,"percentile":0.218,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-676x-f7gg-47vc","url":"https://osv.dev/vulnerability/GHSA-676x-f7gg-47vc","summary":"Netty Vulnerable to DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records","modified":"2026-09-18T15:45:05.624818073Z","packages":[{"ecosystem":"Maven","name":"io.netty:netty-resolver-dns","purl":"pkg:maven/io.netty/netty-resolver-dns","ranges":[">=4.2.0.Final <4.2.15.Final"],"fixed":["4.2.15.Final"]},{"ecosystem":"Maven","name":"io.netty:netty-resolver-dns","purl":"pkg:maven/io.netty/netty-resolver-dns","ranges":["<4.1.135.Final"],"fixed":["4.1.135.Final"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}