{"schema_version":1,"title":"Netty Codec HTTP/3 vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 4 vulnerabilities in Netty Codec HTTP/3: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-56816, was published on 21 July 2026.","url":"https://junglewise.ai/threats/technologies/codec-http-3","json_url":"https://junglewise.ai/threats/technologies/codec-http-3.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-http-3","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":4,"all_time":4,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":1,"last_365_days":4},"latest":[{"cve":"CVE-2026-56816","cvss":7.5,"epss":0.0064,"slug":"cve-2026-56816-netty-memory-exhaustion-in-http3framecodec","title":"Netty memory exhaustion in Http3FrameCodec","severity":"high","exploited":false,"published_at":"2026-07-21T22:17:14.803+00:00","url":"https://junglewise.ai/threats/cve-2026-56816-netty-memory-exhaustion-in-http3framecodec"},{"cve":"CVE-2026-48748","cvss":7.5,"epss":0.0068,"slug":"cve-2026-48748-netty-memory-exhaustion-in-http-3-qpack-decoder","title":"Netty memory exhaustion in HTTP/3 QPACK decoder","severity":"high","exploited":false,"published_at":"2026-06-12T16:16:30.913+00:00","url":"https://junglewise.ai/threats/cve-2026-48748-netty-memory-exhaustion-in-http-3-qpack-decoder"},{"cve":"CVE-2026-44892","cvss":7.5,"epss":0.0049,"slug":"cve-2026-44892-netty-memory-exhaustion-in-http3connectionhandler","title":"Netty memory exhaustion in Http3ConnectionHandler","severity":"high","exploited":false,"published_at":"2026-06-12T05:16:32.007+00:00","url":"https://junglewise.ai/threats/cve-2026-44892-netty-memory-exhaustion-in-http3connectionhandler"},{"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":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"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":1},{"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":0}],"related":[{"name":"Netty","slug":"netty","vulnerabilities":20,"url":"https://junglewise.ai/threats/technologies/netty"},{"name":"Netty-Codec-Http3","slug":"netty-codec-http3","vulnerabilities":4,"url":"https://junglewise.ai/threats/technologies/netty-codec-http3"},{"name":"Netty-Codec-Http","slug":"netty-netty-codec-http","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/netty-netty-codec-http"},{"name":"Netty-Resolver-Dns","slug":"netty-resolver-dns","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/netty-resolver-dns"}],"technology":{"hub":true,"name":"Netty Codec HTTP/3","slug":"codec-http-3","vendor":{"name":"Netty","slug":"netty","url":"https://junglewise.ai/threats/vendors/netty"},"aliases":[],"category":"library","homepage":"https://netty.io/","repo_url":"https://github.com/netty/netty-incubator-codec-http3","description":"An HTTP/3 codec implementation for the Netty asynchronous event-driven network application framework.","url":"https://junglewise.ai/threats/technologies/codec-http-3"},"most_severe":[{"cve":"CVE-2026-48748","cvss":7.5,"epss":0.0068,"slug":"cve-2026-48748-netty-memory-exhaustion-in-http-3-qpack-decoder","title":"Netty memory exhaustion in HTTP/3 QPACK decoder","severity":"high","exploited":false,"published_at":"2026-06-12T16:16:30.913+00:00","url":"https://junglewise.ai/threats/cve-2026-48748-netty-memory-exhaustion-in-http-3-qpack-decoder"},{"cve":"CVE-2026-56816","cvss":7.5,"epss":0.0064,"slug":"cve-2026-56816-netty-memory-exhaustion-in-http3framecodec","title":"Netty memory exhaustion in Http3FrameCodec","severity":"high","exploited":false,"published_at":"2026-07-21T22:17:14.803+00:00","url":"https://junglewise.ai/threats/cve-2026-56816-netty-memory-exhaustion-in-http3framecodec"},{"cve":"CVE-2026-44892","cvss":7.5,"epss":0.0049,"slug":"cve-2026-44892-netty-memory-exhaustion-in-http3connectionhandler","title":"Netty memory exhaustion in Http3ConnectionHandler","severity":"high","exploited":false,"published_at":"2026-06-12T05:16:32.007+00:00","url":"https://junglewise.ai/threats/cve-2026-44892-netty-memory-exhaustion-in-http3connectionhandler"},{"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"}],"generated_at":"2026-09-27T03:07:00.185062+00:00"}