{"id":"DEBIAN-CVE-2026-42851","details":"Kitty is a cross-platform GPU based terminal. In versions prior to 0.47.0, a program able to write bytes to a kitty terminal — a remote SSH peer, a downloaded file viewed with `cat`, a log line, an email body rendered in `less`, an issue body in a TUI, etc. — can cause kitty to execute attacker-supplied Python inside the running kitty process, with the user's full privileges. There is no approval prompt, no remote-control permission requirement, no shell-integration interaction, no clipboard touch, and no editor interaction. Version 0.47.0 fixes the issue.","modified":"2026-09-14T17:00:20.177028036Z","published":"2026-06-12T20:16:45.420Z","upstream":["CVE-2026-42851"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-42851"}],"affected":[{"package":{"name":"kitty","ecosystem":"Debian:12","purl":"pkg:deb/debian/kitty?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.26.5-5","0.30.1-1","0.31.0-1","0.31.0-2","0.31.0-3","0.31.0-4","0.32.0-1","0.32.1-1","0.32.2-1","0.33.0-2","0.33.1-1","0.34.1-1","0.35.1-1","0.35.2-1","0.36.1-1","0.36.4-1","0.36.4-2","0.36.4-3","0.37.0-1","0.38.1-1","0.39.0-1","0.39.1-1","0.40.0-1","0.41.1-1","0.41.1-2","0.42.1-1","0.42.2-1","0.43.1-1","0.44.0-1","0.45.0-1","0.45.0-2","0.46.1-1","0.46.2-1","0.47.0-1","0.47.0-2","0.47.0-3","0.47.3-1","0.47.4-1","0.48.2-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42851.json"}},{"package":{"name":"kitty","ecosystem":"Debian:13","purl":"pkg:deb/debian/kitty?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.41.1-2+deb13u2"}]}],"versions":["0.41.1-2","0.41.1-2+deb13u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42851.json"}},{"package":{"name":"kitty","ecosystem":"Debian:14","purl":"pkg:deb/debian/kitty?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.47.0-1"}]}],"versions":["0.41.1-2","0.42.1-1","0.42.2-1","0.43.1-1","0.44.0-1","0.45.0-1","0.45.0-2","0.46.1-1","0.46.2-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42851.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}