{"action":"Upgrade xorg-server to 2:21.1.23-1 or later.","affected":[{"fixed":"2:21.1.23-1","introduced":"0"}],"component":"xorg-server","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["2:21.1.23-1"],"id":"tcs_01M5NSPP49630ZES4GK3JS8G1P","modified_at":"2026-10-01T03:03:16.704540238Z","published_at":"2026-06-05T12:16:39.240Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-50259","https://security-tracker.debian.org/tracker/CVE-2026-50259"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-50259#Debian:14/xorg-server","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-50259"}],"summary":"A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. _XkbSetMapChecks() declares a fixed-size stack buffer mapWidths[256] indexed by key type index. The helper function Che"}