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CVE-2026-54056
Published:June 12, 2026
Updated:June 29, 2026
Kitty is a cross-platform GPU based terminal. In versions 0.47.0 and 0.47.1, "kitten dnd" can allow a malicious remote drag-and-drop source to overwrite or truncate arbitrary files writable by the local kitty user. Remote "text/uri-list" drops are staged in a temporary directory, but on case-sensitive filesystems duplicate remote basenames are not de-duplicated. An attacker can first create a staged symlink and then send a same-name regular-file entry. The regular-file write uses "utils.CreateAt()" / "openat(O_RDWR|O_CREAT|O_TRUNC)" without "O_NOFOLLOW", so it follows the attacker-created symlink and writes outside the staging directory before final overwrite confirmation runs. This appears related in class to the file-transfer symlink advisory, but it is a different bug: it affects "kitten dnd" remote drag-and-drop staging, uses different vulnerable code ("kittens/dnd/drop.go" and "tools/utils/file_at_fd.go"), and reproduces on commit "4aa4a5c0567a92553a8c20a88a4352da637fca5d", after the file-transfer "O_NOFOLLOW" fix. Version 0.47.2 patches the issue.
Affected Packages
https://github.com/kovidgoyal/kitty.git (GITHUB):
Affected version(s) >=v0.47.0 <v0.47.2
Fix Suggestion:
Update to version v0.47.2
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CVSS v4
Base Score:
8.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
HIGH
Subsequent System Availability
LOW
CVSS v3
Base Score:
7.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
LOW
Weakness Type (CWE)
Improper Link Resolution Before File Access ('Link Following')
EPSS
Base Score:
0.27