CVEvulnerability

CVE-2026-54055

5.0 MEDIUM Published 2026-06-12 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-06-12
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.0 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L
Weaknesses
CWE-367, CWE-426, CWE-59

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 configurations

• kovidgoyal kitty (< 0.47.2)

Related

Weakness · CWE (3)

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

References