CVE-2026-39309

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{"affected": [{"affectedData": [{"product": "Trilium", "vendor": "TriliumNext", "versions": [{"status": "affected", "version": "< 0.102.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Trilium Notes is a cross-platform, hierarchical note taking application focused on building large personal knowledge bases. In versions 0.102.1 and prior, the Electron configuration is vulnerable to TCC Bypass via Prompt Spoofing, allowing local attackers to trigger misleading macOS permission prompts by running malicious code under the identity of the trusted app. The root cause is that the RunAsNode fuse allows launching the app in a special Node.js mode using -e to execute arbitrary system commands with Trilium Notes's permissions and identity. An attacker can leverage this through a subprocess to request any sensitive permissions, such as access to hardware (camera, microphone) and TCC-protected files, causing the TCC system prompt to appear as if the request came from Trilium rather than the attacker's code, because macOS treats the subprocess as part of the parent application. Exploitation allows access to TCC-protected resources like the screen, camera, microphone, and folders such as ~/Documents and ~/Downloads, undermining macOS's security model and UI integrity through social engineering. This issue has been fixed in version 0.102.2."}, {"lang": "es", "value": "Trilium Notes es una aplicaci\u00f3n multiplataforma y jer\u00e1rquica para tomar notas, enfocada en construir grandes bases de conocimiento personal. En las versiones 0.102.1 y anteriores, la configuraci\u00f3n de Electron es vulnerable a un bypass de TCC a trav\u00e9s de suplantaci\u00f3n de avisos, permitiendo a atacantes locales activar avisos de permisos enga\u00f1osos de macOS al ejecutar c\u00f3digo malicioso bajo la identidad de la aplicaci\u00f3n de confianza. La causa ra\u00edz es que el fusible RunAsNode permite iniciar la aplicaci\u00f3n en un modo especial de Node.js usando -e para ejecutar comandos de sistema arbitrarios con los permisos e identidad de Trilium Notes. Un atacante puede aprovechar esto a trav\u00e9s de un subproceso para solicitar cualquier permiso sensible, como acceso al hardware (c\u00e1mara, micr\u00f3fono) y archivos protegidos por TCC, haciendo que el aviso del sistema TCC aparezca como si la solicitud proviniera de Trilium en lugar del c\u00f3digo del atacante, porque macOS trata el subproceso como parte de la aplicaci\u00f3n principal. La explotaci\u00f3n permite el acceso a recursos protegidos por TCC como la pantalla, c\u00e1mara, micr\u00f3fono y carpetas como ~/Documents y ~/Downloads, socavando el modelo de seguridad de macOS y la integridad de la interfaz de usuario a trav\u00e9s de ingenier\u00eda social. Este problema ha sido solucionado en la versi\u00f3n 0.102.2."}], "id": "CVE-2026-39309", "lastModified": "2026-07-24T09:10:00.153", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-39309", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-20T13:25:25.357157Z", "version": "2.0.3"}}]}, "published": "2026-05-20T00:16:37.613", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/TriliumNext/Trilium/releases/tag/v0.102.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/TriliumNext/Trilium/security/advisories/GHSA-66pm-8hvq-2wwx"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/TriliumNext/Trilium/security/advisories/GHSA-66pm-8hvq-2wwx"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-290"}, {"lang": "en", "value": "CWE-451"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.102.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Trilium", "source": "cna", "vendor": "TriliumNext"}, "product": "trilium", "vendor": "triliumnext"}], "created": "2026-05-20T01:30:05.733750+00:00", "title": "Trilium Notes: macOS TCC Bypass via Prompt Spoofing", "updated": "2026-05-20T01:30:06.018081+00:00", "vendors": ["triliumnext", "triliumnext$PRODUCT$trilium"]}