{"schema_version":1,"title":"Netty Project Netty Codec HTTP3 vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 3 vulnerabilities in Netty Project Netty Codec HTTP3: 2 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-100664, was published on 26 September 2026.","url":"https://junglewise.ai/threats/technologies/codec-http3","json_url":"https://junglewise.ai/threats/technologies/codec-http3.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/codec-http3","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":2,"all_time":3,"critical":0,"exploited":0,"last_7_days":2,"last_30_days":2,"last_90_days":2,"last_365_days":3},"latest":[{"cve":"CVE-2026-100664","cvss":7.5,"slug":"cve-2026-100664-netty-s-http-3-codec-io-netty-netty-codec-http3-versions-4-2-2","title":"Netty HTTP/3 codec Host header authority confusion","severity":"high","exploited":false,"published_at":"2026-09-26T14:16:49.54+00:00","url":"https://junglewise.ai/threats/cve-2026-100664-netty-s-http-3-codec-io-netty-netty-codec-http3-versions-4-2-2"},{"cve":"CVE-2026-100659","cvss":6.5,"slug":"cve-2026-100659-netty-s-http-3-codec-io-netty-netty-codec-http3-in-versions-4-2","title":"Netty HTTP/3 codec host header validation bypass","severity":"medium","exploited":false,"published_at":"2026-09-26T14:16:48.83+00:00","url":"https://junglewise.ai/threats/cve-2026-100659-netty-s-http-3-codec-io-netty-netty-codec-http3-in-versions-4-2"},{"cve":"CVE-2026-42582","cvss":7.5,"epss":0.0049,"slug":"cve-2026-42582-netty-unbounded-memory-allocation-in-http-3-qpack-decoder","title":"Netty unbounded memory allocation in HTTP/3 QPACK decoder","severity":"high","exploited":false,"published_at":"2026-05-13T19:17:23.763+00:00","url":"https://junglewise.ai/threats/cve-2026-42582-netty-unbounded-memory-allocation-in-http-3-qpack-decoder"}],"weekly":[{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":2},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Netty Project Netty Codec HTTP","slug":"codec-http","vulnerabilities":12,"url":"https://junglewise.ai/threats/technologies/codec-http"},{"name":"Netty Project Netty","slug":"netty-project-netty","vulnerabilities":6,"url":"https://junglewise.ai/threats/technologies/netty-project-netty"},{"name":"Netty Project Netty Codec Redis","slug":"codec-redis","vulnerabilities":5,"url":"https://junglewise.ai/threats/technologies/codec-redis"},{"name":"Netty Project Netty Incubator Codec OHTTP","slug":"incubator-codec-ohttp","vulnerabilities":4,"url":"https://junglewise.ai/threats/technologies/incubator-codec-ohttp"},{"name":"Netty Project Netty netty-codec-http2","slug":"netty-codec-http2","vulnerabilities":4,"url":"https://junglewise.ai/threats/technologies/netty-codec-http2"},{"name":"Netty Project Netty Codec HAProxy","slug":"codec-haproxy","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/codec-haproxy"},{"name":"Netty Project Netty Handler SSL OCSP","slug":"netty-handler-ssl-ocsp","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/netty-handler-ssl-ocsp"},{"name":"Netty Project Netty Resolver DNS","slug":"resolver-dns","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/resolver-dns"}],"technology":{"hub":true,"name":"Netty Project Netty Codec HTTP3","slug":"codec-http3","vendor":{"name":"Netty Project","slug":"netty-project","url":"https://junglewise.ai/threats/vendors/netty-project"},"aliases":["netty-project-netty-codec-http3"],"category":"library","homepage":"https://netty.io/","repo_url":"https://github.com/netty/netty-incubator-codec-http3","description":"Codec HTTP3 is a Netty library providing support for the HTTP/3 protocol.","url":"https://junglewise.ai/threats/technologies/codec-http3"},"most_severe":[{"cve":"CVE-2026-42582","cvss":7.5,"epss":0.0049,"slug":"cve-2026-42582-netty-unbounded-memory-allocation-in-http-3-qpack-decoder","title":"Netty unbounded memory allocation in HTTP/3 QPACK decoder","severity":"high","exploited":false,"published_at":"2026-05-13T19:17:23.763+00:00","url":"https://junglewise.ai/threats/cve-2026-42582-netty-unbounded-memory-allocation-in-http-3-qpack-decoder"},{"cve":"CVE-2026-100664","cvss":7.5,"slug":"cve-2026-100664-netty-s-http-3-codec-io-netty-netty-codec-http3-versions-4-2-2","title":"Netty HTTP/3 codec Host header authority confusion","severity":"high","exploited":false,"published_at":"2026-09-26T14:16:49.54+00:00","url":"https://junglewise.ai/threats/cve-2026-100664-netty-s-http-3-codec-io-netty-netty-codec-http3-versions-4-2-2"},{"cve":"CVE-2026-100659","cvss":6.5,"slug":"cve-2026-100659-netty-s-http-3-codec-io-netty-netty-codec-http3-in-versions-4-2","title":"Netty HTTP/3 codec host header validation bypass","severity":"medium","exploited":false,"published_at":"2026-09-26T14:16:48.83+00:00","url":"https://junglewise.ai/threats/cve-2026-100659-netty-s-http-3-codec-io-netty-netty-codec-http3-in-versions-4-2"}],"generated_at":"2026-09-28T03:07:00.154823+00:00"}