CVE-2026-54055
mediumpriority · track · 0EPSS 0.001 · 1 %ileEUUSEPSS · scored 2026-10-22
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (4)
External citations — patches, advisories, analysis.
- https://github.com/kovidgoyal/kitty/releasesPatchcnnvd
- https://github.com/kovidgoyal/kitty/security/advisories/GHSA-q446-x7q6-vcxhcnnvd
- https://github.com/kovidgoyal/kitty/security/advisories/GHSA-q446-x7q6-vcxhenisa_euvd
- https://github.com/kovidgoyal/kitty/security/advisories/GHSA-q446-x7q6-vcxhMitigationVendor Advisorynvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan