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 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.
- CVSS 3.1
- 5.0
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L - EPSS
- 0.07% chance of exploitation in the next 30 days; higher than 0% of CVEs (scores of 2026-10-25)
- CWEs
- CWE-59, CWE-367, CWE-426
- Published
- Modified
- Record from
- the NVD, synced
Affected
- kovidgoyal:kitty