{"id":"DEBIAN-CVE-2026-88806","details":"A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.","modified":"2026-09-23T08:47:32.621321815Z","published":"2026-09-21T14:17:22.273Z","upstream":["CVE-2026-88806"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-88806"}],"affected":[{"package":{"name":"libx11","ecosystem":"Debian:12","purl":"pkg:deb/debian/libx11?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:1.8.10-1","2:1.8.10-2","2:1.8.12-1","2:1.8.13-1","2:1.8.4-2","2:1.8.4-2+deb12u1","2:1.8.4-2+deb12u2","2:1.8.6-1","2:1.8.7-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88806.json"}},{"package":{"name":"libx11","ecosystem":"Debian:13","purl":"pkg:deb/debian/libx11?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:1.8.12-1","2:1.8.13-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88806.json"}},{"package":{"name":"libx11","ecosystem":"Debian:14","purl":"pkg:deb/debian/libx11?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:1.8.12-1","2:1.8.13-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88806.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}