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Global apt Government and Defense CRITICAL 43m Global general Technology / Consumer Protection MEDIUM 54m Global vulnerability Information Technology and Security CRITICAL 1h Global vulnerability Information Technology CRITICAL 1h Global apt Infrastructure, Transportation, Finance/Investment HIGH 2h Global vulnerability Information Technology and Infrastructure HIGH 3h Global data_breach Education HIGH 3h Global data_breach Education HIGH 4h Global vulnerability Information Technology CRITICAL 4h Global supply_chain Software Development and Technology HIGH 5h Global apt Government and Defense CRITICAL 43m Global general Technology / Consumer Protection MEDIUM 54m Global vulnerability Information Technology and Security CRITICAL 1h Global vulnerability Information Technology CRITICAL 1h Global apt Infrastructure, Transportation, Finance/Investment HIGH 2h Global vulnerability Information Technology and Infrastructure HIGH 3h Global data_breach Education HIGH 3h Global data_breach Education HIGH 4h Global vulnerability Information Technology CRITICAL 4h Global supply_chain Software Development and Technology HIGH 5h Global apt Government and Defense CRITICAL 43m Global general Technology / Consumer Protection MEDIUM 54m Global vulnerability Information Technology and Security CRITICAL 1h Global vulnerability Information Technology CRITICAL 1h Global apt Infrastructure, Transportation, Finance/Investment HIGH 2h Global vulnerability Information Technology and Infrastructure HIGH 3h Global data_breach Education HIGH 3h Global data_breach Education HIGH 4h Global vulnerability Information Technology CRITICAL 4h Global supply_chain Software Development and Technology HIGH 5h
Vulnerabilities

CVE-2026-34605

Medium ⚡ Exploit Available
SiYuan is a personal knowledge management system. From version 3.6.0 to before version 3.6.2, the SanitizeSVG function introduced in version 3.6.0 to fix XSS in the unauthenticated /api/icon/getDynami
CWE-79 — Weakness Type
Published: Mar 31, 2026  ·  Modified: Apr 3, 2026  ·  Source: NVD
CVSS v3
6.1
🔗 NVD Official
📄 Description (English)

SiYuan is a personal knowledge management system. From version 3.6.0 to before version 3.6.2, the SanitizeSVG function introduced in version 3.6.0 to fix XSS in the unauthenticated /api/icon/getDynamicIcon endpoint can be bypassed by using namespace-prefixed element names such as <x:script xmlns:x="http://www.w3.org/2000/svg">. The Go HTML5 parser records the element's tag as "x:script" rather than "script", so the tag check passes it through. The SVG is served with Content-Type: image/svg+xml and no Content Security Policy; when a browser opens the response directly, its XML parser resolves the prefix to the SVG namespace and executes the embedded script. This issue has been patched in version 3.6.2.

🤖 AI Executive Summary

SiYuan knowledge management system versions 3.6.0-3.6.1 contain an XSS vulnerability in the /api/icon/getDynamicIcon endpoint where the SanitizeSVG function can be bypassed using namespace-prefixed SVG elements. Attackers can inject malicious scripts that execute when SVG files are opened directly in browsers due to missing Content Security Policy headers.

📄 Description (Arabic)

ثغرة Cross-Site Scripting (XSS) في نقطة نهاية API غير مصرح بها في نظام SiYuan تسمح بتجاوز آليات التنظيف عبر استخدام عناصر SVG ذات بادئات مساحة الأسماء. يمكن للمهاجمين تنفيذ كود JavaScript عشوائي عندما يفتح المستخدمون ملفات SVG المصابة مباشرة في متصفحاتهم.

🤖 ملخص تنفيذي (AI)

نظام إدارة المعرفة SiYuan في الإصدارات 3.6.0-3.6.1 يحتوي على ثغرة XSS في نقطة نهاية /api/icon/getDynamicIcon حيث يمكن تجاوز وظيفة SanitizeSVG باستخدام عناصر SVG ذات بادئات مساحة الأسماء. يمكن للمهاجمين حقن نصوص برمجية ضارة تُنفذ عند فتح ملفات SVG مباشرة في المتصفحات بسبب رؤوس سياسة أمان المحتوى المفقودة.

🤖 AI Intelligence Analysis Analyzed: May 24, 2026 06:19
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: medium
🏢 Affected Saudi Sectors
government healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
6.0
/ 10.0
🔧 Remediation Steps (English)
Upgrade SiYuan to version 3.6.2 or later immediately. Implement Content Security Policy headers to restrict script execution. Review and validate all user-supplied SVG content. Disable direct SVG rendering if not required. Monitor for suspicious icon requests to the /api/icon/getDynamicIcon endpoint.
🔧 خطوات المعالجة (العربية)
قم بترقية SiYuan إلى الإصدار 3.6.2 أو أحدث فوراً. قم بتنفيذ رؤوس سياسة أمان المحتوى لتقييد تنفيذ البرامج النصية. راجع وتحقق من صحة جميع محتويات SVG المزودة من قبل المستخدم. قم بتعطيل عرض SVG المباشر إذا لم يكن مطلوباً. راقب الطلبات المريبة إلى نقطة النهاية /api/icon/getDynamicIcon.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.7.1.1 A.7.1.2
🔵 SAMA CSF
ID.RA-1 PR.DS-1
🟡 ISO 27001:2022
A.6.1.1 A.13.1.3
📦 Affected Products / CPE 1 entries
b3log:siyuan
📊 CVSS Score
6.1
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionR — Required
ScopeC — Changed
ConfidentialityL — Low / Local
IntegrityL — Low / Local
AvailabilityN — None / Network
📋 Quick Facts
Severity Medium
CVSS Score6.1
CWECWE-79
EPSS1.07%
Exploit ✓ Yes
Patch ✗ No
Published 2026-03-31
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
6.0
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
exploit-available CWE-79
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