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.
History

Fri, 12 Jun 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Kovidgoyal
Kovidgoyal kitty
Vendors & Products Kovidgoyal
Kovidgoyal kitty

Fri, 12 Jun 2026 20:15:00 +0000

Type Values Removed Values Added
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.
Title @kitty-edit DCS + --color=geninclude vulnerable to Unauthenticated in-process RCE
Weaknesses CWE-862
CWE-94
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-12T20:00:23.386Z

Reserved: 2026-04-30T16:44:48.378Z

Link: CVE-2026-42851

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-12T20:16:45.420

Modified: 2026-06-12T20:16:45.420

Link: CVE-2026-42851

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-12T22:00:20Z