Link Following Affecting kitty package, versions <0.41.1-2+deb13u2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ECHOLATEST-KITTY-18600141
- published9 Aug 2026
- disclosed12 Jun 2026
Introduced: 12 Jun 2026
CVE-2026-54055 (opens in a new tab)How to fix?
Upgrade Echo:latest kitty to version 0.41.1-2+deb13u2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kitty package and not the kitty package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
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.