CVE-2026-44564

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{"affected": [{"affectedData": [{"product": "open-webui", "vendor": "open-webui", "versions": [{"status": "affected", "version": "< 0.9.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*", "matchCriteriaId": "0FB90EC3-1665-446E-AA35-4AEC207A2F3B", "versionEndExcluding": "0.9.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the ydoc:document:update Socket.IO event handler checks whether the sender is a member of the document's Socket.IO room (line 678) but does not verify that the sender has write permission. Users with read-only access join the document room via ydoc:document:join, which only requires read permission (line 520). Once in the room, the user can emit ydoc:document:update events that modify the in-memory Yjs document state and are broadcast to all other collaborators in real time. This vulnerability is fixed in 0.9.0."}, {"lang": "es", "value": "Open WebUI es una plataforma de inteligencia artificial autoalojada dise\u00f1ada para operar completamente sin conexi\u00f3n. Antes de 0.9.0, el gestor de eventos Socket.IO ydoc:document:update verifica si el remitente es miembro de la sala Socket.IO del documento (l\u00ednea 678) pero no verifica que el remitente tenga permiso de escritura. Los usuarios con acceso de solo lectura se unen a la sala del documento a trav\u00e9s de ydoc:document:join, lo que solo requiere permiso de lectura (l\u00ednea 520). Una vez en la sala, el usuario puede emitir eventos ydoc:document:update que modifican el estado del documento Yjs en memoria y se transmiten a todos los dem\u00e1s colaboradores en tiempo real. Esta vulnerabilidad se corrige en 0.9.0."}], "id": "CVE-2026-44564", "lastModified": "2026-11-11T20:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-44564", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-15T21:10:30.355219Z", "version": "2.0.3"}}]}, "published": "2026-05-15T20:16:48.130", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-vrfh-rj4q-rmhr"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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