What is CVE-2026-54055?

CVE-2026-54055 is a medium-severity vulnerability in Kovidgoyal Kitty, classified under Improper Link Resolution Before File Access. CVSS score: 5.0/10. Published 2026-06-12.

How severe is CVE-2026-54055?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Vulnerability in Kovidgoyal Kitty

CVE-2026-54055

Kitty is a cross-platform GPU based terminal. In versions prior to 0.47.2, a local privilege escalation vulnerability exists in kitty's file transmission protocol where a child process running in the terminal can write to arbitrary files o…

EPSS: 0.001 (0.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L.

Affected products

Kovidgoyal Kitty — versions < 0.47.2

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access
CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-426 — Untrusted Search Path

References

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

Frequently asked questions

What is CVE-2026-54055?: CVE-2026-54055 is a medium-severity vulnerability in Kovidgoyal Kitty, classified under Improper Link Resolution Before File Access. CVSS score: 5.0/10. Published 2026-06-12.
How severe is CVE-2026-54055?: Medium severity. CVSS v3 base score is 5.0 out of 10.