kitty: Kitty is a cross-platform GPU based terminal
CVE-2026-42851 is fixed in 3 products on 1 platform, first by kitty 0.32.2-1ubuntu0.4+esm2, released June 12, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| kitty · Debian 13.5 (trixie) | 0.41.1-2+deb13u2 | DEBIAN-CVE-2026-42851 | Jun 24, 2026 |
| kitty · Debian 14 | 0.47.0-1 | DEBIAN-CVE-2026-42851 | Jun 24, 2026 |
| kitty · Ubuntu 24.04.5 LTS (noble) | 0.32.2-1ubuntu0.4+esm2 | kitty 0.32.2-1ubuntu0.4+esm2 | Jun 12, 2026 |
| kitty · Ubuntu 26.04.1 LTS (resolute) | 0.45.0-1ubuntu0.1~esm2 | kitty 0.45.0-1ubuntu0.1~esm2 | Jun 12, 2026 |
| kitty · opensuse-leap 16.0 | 0.48.2-bp160.1.1 | OPENSUSE-SU-2026:21599-1 | Aug 18, 2026 |
| kitty-shell-integration · Ubuntu 24.04.5 LTS (noble) | 0.32.2-1ubuntu0.4+esm2 | kitty-shell-integration 0.32.2-1ubuntu0.4+esm2 | Jun 12, 2026 |
| kitty-shell-integration · Ubuntu 26.04.1 LTS (resolute) | 0.45.0-1ubuntu0.1~esm2 | kitty-shell-integration 0.45.0-1ubuntu0.1~esm2 | Jun 12, 2026 |
| kitty-terminfo · Ubuntu 24.04.5 LTS (noble) | 0.32.2-1ubuntu0.4+esm2 | kitty-terminfo 0.32.2-1ubuntu0.4+esm2 | Jun 12, 2026 |
| kitty-terminfo · Ubuntu 26.04.1 LTS (resolute) | 0.45.0-1ubuntu0.1~esm2 | kitty-terminfo 0.45.0-1ubuntu0.1~esm2 | Jun 12, 2026 |
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