{"cve":"CVE-2026-48748","nvd":{"published":"2026-06-12T16:16:30.913","modified":"2026-08-04T22:17:15.000","status":"Modified","description":"Netty is a network application framework for development of protocol servers and clients. Starting in version 4.2.0.Final and 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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770"],"references":["https://github.com/netty/netty/commit/75127cab731ee35068d1f0667bffa188bc332f5d","https://github.com/netty/netty/releases/tag/netty-4.2.15.Final","https://github.com/netty/netty/security/advisories/GHSA-4grm-h2qv-h6w6","https://access.redhat.com/security/cve/CVE-2026-48748","https://bugzilla.redhat.com/show_bug.cgi?id=2488441"],"products":["netty:netty"],"source":"nvd","synced_at":"2026-10-19T22:38:48.522727527+00:00"},"epss":{"cve":"CVE-2026-48748","score":0.00392,"percentile":0.33428,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-4grm-h2qv-h6w6","url":"https://osv.dev/vulnerability/GHSA-4grm-h2qv-h6w6","summary":"Netty HTTP/3 QPACK Blocked Streams Memory Exhaustion","modified":"2026-09-10T03:50:48.196030192Z","packages":[{"ecosystem":"Maven","name":"io.netty:netty-codec-http3","purl":"pkg:maven/io.netty/netty-codec-http3","ranges":[">=4.2.0.Final <4.2.15.Final"],"fixed":["4.2.15.Final"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}