PT-2026-48969 · Kovid Goyal · Kitty

Published 2026-06-12 · Updated 2026-06-12 · CVE-2026-54055

NVD

CVSS v3.1

5.0

Medium

Base vector

AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L

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 on the filesystem by exploiting a TOCTOU (Time-of-Check-Time-of-Use) race condition between symlink validation and file creation. The os.open() call used to create files does not use O NOFOLLOW, allowing an attacker to create a symlink between the initial stat check and the actual file open, causing the write to follow the symlink to an arbitrary destination. Version 0.47.2 fixes the issue.

Fix

Time Of Check To Time Of Use

Untrusted Search Path

Link Following

Weakness Enumeration

CWE-367

CWE-426

CWE-59

Related Identifiers

CVE-2026-54055

Affected Products

Kitty

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-54055 · Security Note
• https://github.com/kovidgoyal/kitty/security/advisories/GHSA-q446-x7q6-vcxh · Note