{"action":"Upgrade xorg-server to 2:21.1.22-1 or later.","affected":[{"fixed":"2:21.1.22-1","introduced":"0"}],"component":"xorg-server","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["2:21.1.22-1"],"id":"tcs_01M5NRRRVZYFTJMCKPZ3FV0S3K","modified_at":"2026-10-27T10:00:59.690503332Z","published_at":"2026-05-05T16:16:11.787Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-34002","https://security-tracker.debian.org/tracker/CVE-2026-34002"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-34002#Debian:14/xorg-server","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-34002"}],"summary":"A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension) modifier map handling. An attacker with access to the X11 server can exploit t"}