What is CVE-2026-42850?

CVE-2026-42850 is a high-severity vulnerability in Kovidgoyal Kitty, classified under Command Injection. CVSS score: 8.8/10. Published 2026-06-12.

How severe is CVE-2026-42850?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Kovidgoyal Kitty

CVE-2026-42850

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…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.003 (20.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Kovidgoyal Kitty — versions < 0.47.0

Weakness classification (CWE)

CWE-77 — Command Injection

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-42850?: CVE-2026-42850 is a high-severity vulnerability in Kovidgoyal Kitty, classified under Command Injection. CVSS score: 8.8/10. Published 2026-06-12.
How severe is CVE-2026-42850?: High severity. CVSS v3 base score is 8.8 out of 10.