CVE-2026-42851
highpriority · track · 0OT risk · elevatedEPSS 0.002 · 6 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (4)
External citations — patches, advisories, analysis.
- https://github.com/kovidgoyal/kitty/releasesPatchcnnvd
- https://github.com/kovidgoyal/kitty/security/advisories/GHSA-w98g-hpvr-r332cnnvd
- https://github.com/kovidgoyal/kitty/security/advisories/GHSA-w98g-hpvr-r332enisa_euvd
- https://github.com/kovidgoyal/kitty/security/advisories/GHSA-w98g-hpvr-r332ExploitMitigationVendor Advisorynvd
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