Lumiverse: SMB `exists()` basename injection via smbclient `!cmd` escape_CVE-2026-44449

{
    "lastseen": "",
    "description": "Lumiverse is a full-featured AI chat application. Prior to 0.9.7, when the primary toSmbPath(fullPath) call throws, the method falls back to a dirname/basename split and only validates the directory prefix. The basename is concatenated directly into the smbclient -c script without validation. smbclient interprets ; as a subcommand separator and !cmd as a local-shell escape that runs cmd on the host. A path whose directory component is clean but whose basename contains \"; !<cmd>; echo \" achieves arbitrary command execution on the Lumiverse server. This vulnerability is fixed in 0.9.7.",
    "published": "2026-05-26T20:00:12.090Z",
    "modified": "2026-05-26T20:00:12.090Z",
    "type": "cve",
    "title": "Lumiverse: SMB `exists()` basename injection via smbclient `!cmd` escape",
    "source": "GitHub_M",
    "references": "https://github.com/prolix-oc/Lumiverse/security/advisories/GHSA-4v38-9hqq-7j53",
    "id": "CVE-2026-44449",
    "bulletinFamily": "",
    "cwe": [
        "CWE-88"
    ],
    "cvelist": null,
    "sourceData": "prolix-oc Lumiverse < 0.9.7",
    "sourceHref": "",
    "cvss": {
        "score": 9.1,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Lumiverse",
    "version": "< 0.9.7",
    "vendor": "prolix-oc",
    "ai_description": "Arbitrary command execution vulnerability via SMB basename injection",
    "ai_severity": "CRITICAL",
    "ai_vendor": "prolix-oc",
    "ai_product": "Lumiverse",
    "ai_version": "< 0.9.7",
    "ai_score": 9.1
}