Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV L L N R U H H H 7.8 .0016 6.1 —
AFFECTED Product Versions Fixed kitty < 0.47.0 – —
TIMELINE Apr 30 Reserved by GitHub_M Jun 12 EXPLOIT PUBLISHED — CVE-2026-42851 (kovidgoyal kitty). Public exploit reference added. Jun 12 Published (CNA: GitHub_M)
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.
| Date | Event | Detail |
|---|---|---|
| April 30, 2026 | Reserved | Reserved by GitHub_M |
| June 12, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-42851 (kovidgoyal kitty). Public exploit reference added. |
| June 12, 2026 | Published | Published (CNA: GitHub_M) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| kovidgoyal | kitty | — | < 0.47.0 | — |
Authoritative record: CVE-2026-42851 at cve.org
Vendors: kovidgoyal
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-42851 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.