{"action":"Upgrade io.netty:netty-codec-dns to 4.1.133.Final (4.1.x) or 4.2.13.Final (4.2.x) or later.","affected":[{"fixed":"4.2.13.Final","introduced":"4.2.0.Alpha1"},{"fixed":"4.1.133.Final","introduced":"0"}],"component":"io.netty:netty-codec-dns","cve_ids":["CVE-2026-42579"],"ecosystem":"Maven","epss":0.01006,"exploited":false,"fixed_versions":["4.2.13.Final","4.1.133.Final"],"ghsa_id":"GHSA-cm33-6792-r9fm","id":"tcs_01M5N8SNPMMD53F2D91R4673S7","modified_at":"2026-09-10T03:51:05.363150105Z","published_at":"2026-05-07T00:12:47Z","references":["https://osv.dev/vulnerability/GHSA-cm33-6792-r9fm","https://github.com/netty/netty/security/advisories/GHSA-cm33-6792-r9fm","https://nvd.nist.gov/vuln/detail/CVE-2026-42579","https://github.com/netty/netty","https://tools.ietf.org/html/rfc1035#section-2.3.4","https://tools.ietf.org/html/rfc1035#section-4.1.4"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-cm33-6792-r9fm","url":"https://osv.dev/vulnerability/GHSA-cm33-6792-r9fm"}],"summary":"Netty has a DNS Codec Input Validation Bypass (Encoder + Decoder)"}