{"id":"CVE-2026-48748","summary":"Netty HTTP/3 QPACK Blocked Streams Memory Exhaustion","details":"Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, a memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OOM error. Version 4.2.15.Final patches the issue.","aliases":["GHSA-4grm-h2qv-h6w6"],"modified":"2026-06-18T03:54:50.898661782Z","published":"2026-06-12T14:45:04.763Z","related":["CGA-4mcm-jhpp-q2j2"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-770"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48748.json"},"references":[{"type":"WEB","url":"https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48748.json"},{"type":"ADVISORY","url":"https://github.com/netty/netty/security/advisories/GHSA-4grm-h2qv-h6w6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48748"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/netty/netty","events":[{"introduced":"09e64d259c99be8b5b2a471a78f11e65eb82598a"},{"fixed":"a41f7b289ce1d697c50846f3ade3983e22b2ed40"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE","REFERENCES"],"extracted_events":[{"introduced":"4.2.0.Final"},{"fixed":"4.2.15.Final"},{"introduced":"4.2.0"},{"fixed":"4.2.15"}],"cpe":"cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*"}}],"versions":["netty-4.2.14.Final","netty-4.2.13.Final","netty-4.2.12.Final","netty-4.2.11.Final","netty-4.2.10.Final","netty-4.2.9.Final","netty-4.2.8.Final","netty-4.2.7.Final","netty-4.2.6.Final","netty-4.2.5.Final","netty-4.2.4.Final","netty-4.2.3.Final","netty-4.2.2.Final","netty-4.2.1.Final","netty-4.2.0.Final"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-48748.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}