CVE-2026-34585

{"id": "CVE-2026-34585", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.6, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.5}]}, "published": "2026-03-31T22:16:22.080", "references": [{"url": "https://github.com/siyuan-note/siyuan/issues/17246", "tags": ["Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://github.com/siyuan-note/siyuan/releases/tag/v3.6.2", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-ff66-236v-p4fg", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-ff66-236v-p4fg", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-94"}]}], "descriptions": [{"lang": "en", "value": "SiYuan is a personal knowledge management system. Prior to version 3.6.2, a vulnerability allows crafted block attribute values to bypass server-side attribute escaping when an HTML entity is mixed with raw special characters. An attacker can embed a malicious IAL value inside a .sy document, package it as a .sy.zip, and have the victim import it through the normal Import -> SiYuan .sy.zip workflow. Once the note is opened, the malicious attribute breaks out of its original HTML context and injects an event handler, resulting in stored XSS. In the Electron desktop client, this XSS reaches remote code execution because injected JavaScript runs with access to Node/Electron APIs. This issue has been patched in version 3.6.2."}, {"lang": "es", "value": "SiYuan es un sistema de gesti\u00f3n de conocimiento personal. Antes de la versi\u00f3n 3.6.2, una vulnerabilidad permite que valores de atributos de bloque manipulados eludan el escape de atributos del lado del servidor cuando una entidad HTML se mezcla con caracteres especiales sin procesar. Un atacante puede incrustar un valor IAL malicioso dentro de un documento .sy, empaquetarlo como un .sy.zip, y hacer que la v\u00edctima lo importe a trav\u00e9s del flujo de trabajo normal de Importar -> SiYuan .sy.zip. Una vez que se abre la nota, el atributo malicioso sale de su contexto HTML original e inyecta un gestor de eventos, resultando en XSS almacenado. En el cliente de escritorio Electron, este XSS alcanza la ejecuci\u00f3n remota de c\u00f3digo porque el JavaScript inyectado se ejecuta con acceso a las API de Node/Electron. Este problema ha sido parcheado en la versi\u00f3n 3.6.2."}], "lastModified": "2026-04-03T16:52:22.293", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "27CB71A7-7208-417A-AE6D-266D57F683E9", "versionEndExcluding": "3.6.2"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}