{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-47691/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-13T03:56:03.157Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-47691","@id":"https://www.cve.org/CVERecord?id=CVE-2026-47691","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` insufficiently validates the bailiwick of NS records, enabling DNS Cache Poisoning. An attacker controlling an authoritative name server for a subdomain can poison the cache for parent domains (like `.co.uk`). In `io.netty.resolver.dns.DnsResolveContext.AuthoritativeNameServerList#add` method accepts any NS record from the AUTHORI"},"products":[{"@id":"cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"No fixed version is published yet; monitor the upstream advisory.","timestamp":"2026-06-13T03:56:03.157Z"}]}