Lumiverse: TSX component sandbox escape via DOM ref and string-split identifier bypass_CVE-2026-44451

{
    "lastseen": "",
    "description": "Lumiverse is a full-featured AI chat application. Prior to 0.9.7, the component override system transpiles user-supplied TSX via Sucrase and evaluates it with new Function, shadowing dangerous globals (fetch, window, eval, etc.) with undefined. A static source validator (validateComponentOverrideSource) additionally blocks these identifiers by word-boundary regex. Both controls are bypassed. String-split bypass of the static validator: any blocked identifier can be reconstructed at runtime from string fragments ('ownerDoc' + 'ument'). DOM ref escape from the sandbox: useRef and useEffect are provided in scope. A ref attached to a rendered element gives a live DOM node. From any real DOM node, node['ownerDoc'+'ument']['def'+'aultView'] yields the real window, bypassing all identifier shadows. Theme packs (.lumitheme / .lumiverse-theme) are the shareable delivery mechanism. A malicious pack is an exploit path: the victim imports the file, enables one component override in the Theme Editor, and the payload fires in their authenticated session.This vulnerability is fixed in 0.9.7.",
    "published": "2026-05-26T19:58:37.036Z",
    "modified": "2026-05-26T19:58:37.036Z",
    "type": "cve",
    "title": "Lumiverse: TSX component sandbox escape via DOM ref and string-split identifier bypass",
    "source": "GitHub_M",
    "references": "https://github.com/prolix-oc/Lumiverse/security/advisories/GHSA-rgp6-55rw-5xf4",
    "id": "CVE-2026-44451",
    "bulletinFamily": "",
    "cwe": [
        "CWE-693"
    ],
    "cvelist": null,
    "sourceData": "prolix-oc Lumiverse < 0.9.7",
    "sourceHref": "",
    "cvss": {
        "score": 9.3,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
        "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": "TSX component sandbox escape via DOM ref and string-split identifier bypass",
    "ai_severity": "Critical",
    "ai_vendor": "prolix-oc",
    "ai_product": "Lumiverse",
    "ai_version": "< 0.9.7",
    "ai_score": 9.3
}