{"id":"RLSA-2026:55772","summary":"Important: haproxy security update","details":"The haproxy packages provide a reliable, high-performance network load balancer for TCP and HTTP-based applications.\n\nSecurity Fix(es):\n\n* haproxy: HAProxy: Denial of Service via HPACK dynamic table insertions (CVE-2026-55204)\n\n* haproxy: HAProxy: Response smuggling due to integer overflow in FastCGI record length handling (CVE-2026-55203)\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":"2026-08-18T06:30:06.130379329Z","published":"2026-08-18T06:04:25.436260Z","upstream":["CVE-2026-55203","CVE-2026-55204"],"database_specific":{"license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:55772","license":"CC-BY-4.0"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:55772"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2490518"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2490522"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:55772"}],"affected":[{"package":{"name":"haproxy","ecosystem":"Rocky Linux:9","purl":"pkg:rpm/rocky-linux/haproxy?distro=rocky-linux-9&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.8.14-3.el9_8.2"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:55772.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}