{"id":"RHSA-2026:50538","summary":"Red Hat Security Advisory: mod_http2 security update","modified":"2026-08-11T10:11:36Z","published":"2026-08-05T10:37:41Z","upstream":["CVE-2025-53020","CVE-2026-43951","CVE-2026-48913","CVE-2026-49975"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:50538"},{"type":"ARTICLE","url":"https://access.redhat.com/security/updates/classification/#important"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2379343"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2485371"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2486405"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2486415"},{"type":"ADVISORY","url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_50538.json"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2025-53020"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2025-53020"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-53020"},{"type":"ARTICLE","url":"https://httpd.apache.org/security/vulnerabilities_24.html"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-43951"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-43951"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43951"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-48913"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-48913"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48913"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-49975"},{"type":"ARTICLE","url":"https://access.redhat.com/security/vulnerabilities/RHSB-2026-007"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-49975"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49975"},{"type":"ARTICLE","url":"https://blog.calif.io/p/codex-discovered-a-hidden-http2-bomb"}],"affected":[{"package":{"name":"mod_http2","ecosystem":"Red Hat:enterprise_linux_eus:10.0","purl":"pkg:rpm/redhat/mod_http2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.0.29-2.el10_0.2"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:50538.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}