# CVE-2026-42850: kitty: Kitty is a cross-platform GPU based terminal

CVE-2026-42850 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.

- Web page: https://patchblox.com/security/cve/CVE-2026-42850
- Priority: High
- CVSS: 8.8 (high)
- EPSS: 0.0029
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 12, 2026

## Description

Kitty is a cross-platform GPU based terminal. In versions prior to 0.47.0, it is possible to inject commands within the subshell through kitty error. A special escape code will make kitty return an error, this error is not escaped and will be correctly echoed back to the terminal with CRLF, as such it will be run by the shell in use. To exploit this bug, the victim must use a netcat or a similar program to connect to the attacker, or else listening for someone to connect. Once this condition is set, an attacker could pwn the computer of the victim using a special kitty's escape code that will run a command in the shell in use. Version 04.7.0 fixes the issue.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | kitty Debian 13.5 (trixie) | 0.41.1-2+deb13u2 | [DEBIAN-CVE-2026-42850](https://patchblox.com/security/data/fix/linux/debian-cve-2026-42850.md) | Jun 24, 2026 |
| Linux | kitty Debian 14 | 0.47.0-1 | [DEBIAN-CVE-2026-42850](https://patchblox.com/security/data/fix/linux/debian-cve-2026-42850.md) | Jun 24, 2026 |
| Linux | kitty Ubuntu 24.04.5 LTS (noble) | 0.32.2-1ubuntu0.4+esm2 | [kitty 0.32.2-1ubuntu0.4+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-kitty-0.32.2-1ubuntu0.4-esm2.md) | Jun 12, 2026 |
| Linux | kitty Ubuntu 26.04.1 LTS (resolute) | 0.45.0-1ubuntu0.1~esm2 | [kitty 0.45.0-1ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-kitty-0.45.0-1ubuntu0.1-esm2.md) | Jun 12, 2026 |
| Linux | kitty opensuse-leap 16.0 | 0.48.2-bp160.1.1 | [OPENSUSE-SU-2026:21599-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21599-1.md) | Aug 18, 2026 |
| Linux | kitty-shell-integration Ubuntu 24.04.5 LTS (noble) | 0.32.2-1ubuntu0.4+esm2 | [kitty-shell-integration 0.32.2-1ubuntu0.4+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-kitty-shell-integration-0.32.2-1ubuntu0.4-esm2.md) | Jun 12, 2026 |
| Linux | kitty-shell-integration Ubuntu 26.04.1 LTS (resolute) | 0.45.0-1ubuntu0.1~esm2 | [kitty-shell-integration 0.45.0-1ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-kitty-shell-integration-0.45.0-1ubuntu0.1-esm2.md) | Jun 12, 2026 |
| Linux | kitty-terminfo Ubuntu 24.04.5 LTS (noble) | 0.32.2-1ubuntu0.4+esm2 | [kitty-terminfo 0.32.2-1ubuntu0.4+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-kitty-terminfo-0.32.2-1ubuntu0.4-esm2.md) | Jun 12, 2026 |
| Linux | kitty-terminfo Ubuntu 26.04.1 LTS (resolute) | 0.45.0-1ubuntu0.1~esm2 | [kitty-terminfo 0.45.0-1ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-kitty-terminfo-0.45.0-1ubuntu0.1-esm2.md) | Jun 12, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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