CVE-2026-54055
MEDIUM
MEDIUM
Priority: 0.00
BB Relevance:
15/100
Published: 2026-06-12
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
High
PR:
Low
UI:
Required
S:
Unchanged
C:
None
I:
High
A:
Low
Description
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.
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| kovidgoyal | kitty | < 0.47.2 |
References & Advisories (1)
Mitigation
Vendor Advisory