{"id":"RHSA-2026:53450","summary":"Red Hat Security Advisory: xorg-x11-server-Xwayland security update","modified":"2026-08-12T10:32:37.443458045Z","published":"2026-08-12T10:16:32Z","upstream":["CVE-2026-55999"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:53450"},{"type":"ARTICLE","url":"https://access.redhat.com/security/updates/classification/#important"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2496165"},{"type":"ADVISORY","url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_53450.json"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-55999"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-55999"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55999"}],"affected":[{"package":{"name":"xorg-x11-server-Xwayland","ecosystem":"Red Hat:rhel_aus:8.6::appstream","purl":"pkg:rpm/redhat/xorg-x11-server-Xwayland"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:21.1.3-2.el8_6.8"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:53450.json"}},{"package":{"name":"xorg-x11-server-Xwayland-debuginfo","ecosystem":"Red Hat:rhel_aus:8.6::appstream","purl":"pkg:rpm/redhat/xorg-x11-server-Xwayland-debuginfo"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:21.1.3-2.el8_6.8"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:53450.json"}},{"package":{"name":"xorg-x11-server-Xwayland-debugsource","ecosystem":"Red Hat:rhel_aus:8.6::appstream","purl":"pkg:rpm/redhat/xorg-x11-server-Xwayland-debugsource"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:21.1.3-2.el8_6.8"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:53450.json"}},{"package":{"name":"xorg-x11-server-Xwayland","ecosystem":"Red Hat:rhel_eus_long_life:8.6::appstream","purl":"pkg:rpm/redhat/xorg-x11-server-Xwayland"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:21.1.3-2.el8_6.8"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:53450.json"}},{"package":{"name":"xorg-x11-server-Xwayland-debuginfo","ecosystem":"Red Hat:rhel_eus_long_life:8.6::appstream","purl":"pkg:rpm/redhat/xorg-x11-server-Xwayland-debuginfo"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:21.1.3-2.el8_6.8"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:53450.json"}},{"package":{"name":"xorg-x11-server-Xwayland-debugsource","ecosystem":"Red Hat:rhel_eus_long_life:8.6::appstream","purl":"pkg:rpm/redhat/xorg-x11-server-Xwayland-debugsource"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:21.1.3-2.el8_6.8"}]}],"database_specific":{"source":"https://security.access.redhat.com/data/osv/RHSA-2026:53450.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}