CVE-2026-44451 (GCVE-0-2026-44451)
Vulnerability from cvelistv5 – Published: 2026-05-26 19:58 – Updated: 2026-05-27 17:26
VLAI
EPSS
VEX
Title
Lumiverse: TSX component sandbox escape via DOM ref and string-split identifier bypass
Summary
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.
Severity
9.3 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 17:26 UTC
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/prolix-oc/Lumiverse/security/a… | x_refsource_CONFIRM |
Impacted products
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"value": "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 (\u0027ownerDoc\u0027 + \u0027ument\u0027). 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[\u0027ownerDoc\u0027+\u0027ument\u0027][\u0027def\u0027+\u0027aultView\u0027] 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."
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"value": "Lumiverse es una aplicaci\u00f3n de chat de IA con todas las funciones. Anteriormente a la 0.9.7, el sistema de anulaci\u00f3n de componentes transpila TSX proporcionado por el usuario a trav\u00e9s de Sucrase y lo eval\u00faa con new Function, ocultando globales peligrosos (fetch, window, eval, etc.) con undefined. Un validador de c\u00f3digo fuente est\u00e1tico (validateComponentOverrideSource) adicionalmente bloquea estos identificadores mediante expresiones regulares de l\u00edmite de palabra. Ambos controles son eludidos. Elusi\u00f3n del validador est\u00e1tico mediante divisi\u00f3n de cadenas: cualquier identificador bloqueado puede ser reconstruido en tiempo de ejecuci\u00f3n a partir de fragmentos de cadena (\u0027ownerDoc\u0027 + \u0027ument\u0027). Escape de referencia DOM desde la sandbox: useRef y useEffect se proporcionan en el \u00e1mbito. Una referencia adjunta a un elemento renderizado proporciona un nodo DOM en vivo. Desde cualquier nodo DOM real, node[\u0027ownerDoc\u0027+\u0027ument\u0027][\u0027def\u0027+\u0027aultView\u0027] produce la ventana real, eludiendo todas las ocultaciones de identificadores. Los paquetes de temas (.lumitheme / .lumiverse-theme) son el mecanismo de entrega compartible. Un paquete malicioso es una ruta de exploit: la v\u00edctima importa el archivo, habilita una anulaci\u00f3n de componente en el Editor de Temas, y la carga \u00fatil se activa en su sesi\u00f3n autenticada. Esta vulnerabilidad se corrige en la versi\u00f3n 0.9.7."
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Sightings
| Author | Source | Type | Date | Other |
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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