Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| kovidgoyal | kitty | < 0.47.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | kitty | 0.47.0-1 | — |
| Debian 13 | kitty | 0.41.1-2+deb13u2 | — |
| Debian 12 | kitty | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | kitty | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | kitty | 0.45.0-1ubuntu0.1~esm2 | USN-8763-1 |
| Ubuntu Pro 24.04 LTS | kitty | 0.32.2-1ubuntu0.4+esm2 | USN-8763-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | kitty | 0.48.2-bp160.1.1 | openSUSE-SU-2026:21599-1 |
Advisories 2
- USN-8763-1 kitty vulnerabilities Ubuntu Security Notices (USN) · Sep 16, 2026
- openSUSE-SU-2026:21599-1 Security update for kitty SUSE / openSUSE Security Updates · Aug 21, 2026