CVE-2026-32940

{"id": "CVE-2026-32940", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.3, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.8, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 2.8}]}, "published": "2026-03-20T04:16:49.367", "references": [{"url": "https://github.com/advisories/GHSA-6865-qjcf-286f", "tags": ["Exploit", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/siyuan-note/siyuan/commit/d01d561875d4f744e9f6232f1d4831e3642b8696", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/siyuan-note/siyuan/releases/tag/v3.6.1", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-4mx9-3c2h-hwhg", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-184"}]}], "descriptions": [{"lang": "en", "value": "SiYuan is a personal knowledge management system. In versions 3.6.0 and below, SanitizeSVG has an incomplete blocklist \u2014 it blocks data:text/html and data:image/svg+xml in href attributes but misses data:text/xml and data:application/xml, both of which can render SVG with JavaScript execution. The unauthenticated /api/icon/getDynamicIcon endpoint serves user-controlled input (via the content parameter) directly into SVG markup using fmt.Sprintf with no escaping, served as Content-Type: image/svg+xml. This creates a click-through XSS: a victim navigates to a crafted URL, sees an SVG with an injected link, and clicking it triggers JavaScript via the bypassed MIME types. The attack requires direct navigation to the endpoint or <object>/<embed> embedding, since <img> tag rendering in the frontend doesn't allow interactive links. This issue has been fixed in version 3.6.1."}, {"lang": "es", "value": "SiYuan es un sistema de gesti\u00f3n de conocimiento personal. En las versiones 3.6.0 e inferiores, SanitizeSVG tiene una lista de bloqueo incompleta \u2014 bloquea data:text/html y data:image/svg+xml en atributos href pero omite data:text/xml y data:application/xml, ambos de los cuales pueden renderizar SVG con ejecuci\u00f3n de JavaScript. El endpoint no autenticado /API/icon/getDynamicIcon sirve entrada controlada por el usuario (a trav\u00e9s del par\u00e1metro content) directamente en el marcado SVG usando fmt.Sprintf sin escape, servido como Content-Type: image/svg+xml. Esto crea un XSS de clic: una v\u00edctima navega a una URL manipulada, ve un SVG con un enlace inyectado, y al hacer clic en \u00e9l se activa JavaScript a trav\u00e9s de los tipos MIME omitidos. El ataque requiere navegaci\u00f3n directa al endpoint o incrustaci\u00f3n de /, ya que la renderizaci\u00f3n de la etiqueta en el frontend no permite enlaces interactivos. Este problema ha sido solucionado en la versi\u00f3n 3.6.1."}], "lastModified": "2026-03-23T18:22:49.847", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E1AA6470-222A-4841-A487-DF65F9859780", "versionEndExcluding": "3.6.1"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}