Kitty has an arbitrary file overwrite via symlink following in `kitten dnd` remote drop staging_CVE-2026-54056

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-06-12T20:06:06.437Z",
    "modified": "2026-06-12T20:06:06.437Z",
    "type": "cve",
    "title": "Kitty has an arbitrary file overwrite via symlink following in `kitten dnd` remote drop staging",
    "source": "GitHub_M",
    "references": "https://github.com/kovidgoyal/kitty/security/advisories/GHSA-r892-cv7q-fw8x",
    "id": "CVE-2026-54056",
    "bulletinFamily": "",
    "cwe": [
        "CWE-59"
    ],
    "cvelist": null,
    "sourceData": "kovidgoyal kitty >= 0.47.0, < 0.47.2",
    "sourceHref": "",
    "cvss": {
        "score": 7.6,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:L",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "kitty",
    "version": ">= 0.47.0, < 0.47.2",
    "vendor": "kovidgoyal",
    "ai_description": "",
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    "ai_score": 0
}