{"id":"ALSA-2026:55859","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\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.\n","modified":"2026-08-18T11:15:07.873715175Z","published":"2026-08-17T00:00:00Z","related":["CVE-2026-55204"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:55859"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-55204"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2490518"},{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2026-55859.html"}],"affected":[{"package":{"name":"haproxy","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/haproxy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.27-5.el8_10.2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:55859.json"}}],"schema_version":"1.9.0"}