{"id":"RLSA-2023:5837","summary":"Important: nghttp2 security update","details":"nghttp2 contains the Hypertext Transfer Protocol version 2 (HTTP/2) client, server, and proxy programs as well as a library implementing the HTTP/2 protocol in C.\n\nSecurity Fix(es):\n\n* HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-03-11T06:24:36.495918Z","published":"2025-12-05T09:02:52.915494Z","upstream":["CVE-2023-44487"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2023:5837"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2242803"}],"affected":[{"package":{"name":"nghttp2","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/nghttp2?distro=rocky-linux-8-x86-64&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.33.0-5.el8_8"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2023:5837.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"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}