{"id":"DEBIAN-CVE-2026-56003","details":"A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server.","modified":"2026-09-01T16:06:51.520054683Z","published":"2026-07-08T10:16:23.577Z","upstream":["CVE-2026-56003"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-56003"}],"affected":[{"package":{"name":"libxfont","ecosystem":"Debian:12","purl":"pkg:deb/debian/libxfont?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.0.6-1+deb12u1"}]}],"versions":["1:2.0.6-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56003.json"}},{"package":{"name":"libxfont","ecosystem":"Debian:13","purl":"pkg:deb/debian/libxfont?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.0.6-1+deb13u1"}]}],"versions":["1:2.0.6-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56003.json"}},{"package":{"name":"libxfont","ecosystem":"Debian:14","purl":"pkg:deb/debian/libxfont?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.0.8-1"}]}],"versions":["1:2.0.6-1","1:2.0.6-1+hurd.1","1:2.0.6-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56003.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}