# CVE-2026-54057: kitty: Kitty is a cross-platform GPU based terminal

CVE-2026-54057 is fixed in 3 products on 1 platform, first by kitty 0.45.0-1ubuntu0.1~esm2, released June 12, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-54057
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0017
- 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 0.47.3, kitty's OSC 21 (color-control) query reply reflects attacker-controlled bytes, including newlines, into the shell's input without sanitization. Version 0.47.3 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-2026-54057](https://patchblox.com/security/data/fix/linux/debian-cve-2026-54057.md) | Jun 24, 2026 |
| Linux | kitty Debian 14 | 0.47.3-1 | [DEBIAN-CVE-2026-54057](https://patchblox.com/security/data/fix/linux/debian-cve-2026-54057.md) | Jun 24, 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 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 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 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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