CVE-2026-54056

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Source
https://cve.org/CVERecord?id=CVE-2026-54056
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54056.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54056
Aliases
  • GHSA-r892-cv7q-fw8x
Downstream
Published
2026-06-12T20:06:06.437Z
Modified
2026-08-12T04:18:09.660396421Z
Severity
  • 7.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:L CVSS Calculator
Summary
Kitty has an arbitrary file overwrite via symlink following in `kitten dnd` remote drop staging
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54056.json",
    "cwe_ids": [
        "CWE-59"
    ]
}
References

Affected packages

Git / github.com/kovidgoyal/kitty

Affected ranges

Type
GIT
Repo
https://github.com/kovidgoyal/kitty
Events
Introduced
eadec09d499b6a1332fc75960a51abb1645d26ab
Fixed
d20fe4d4b5860b77f507317ac0bf39242725d1ae
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0.47.0"
        },
        {
            "fixed": "0.47.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "cpe": "cpe:2.3:a:kovidgoyal:kitty:*:*:*:*:*:*:*:*"
}

Affected versions

v0.*
v0.47.0
v0.47.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54056.json"