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TI-2026-23300 Aliases CVE-2026-29183GHSA-6865-qjcf-286f

Cross-site scripting in siyuan-note siyuan

Priority MEDIUM 43CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

SiYuan is a personal knowledge management system. Prior to version 3.5.9, an unauthenticated reflected XSS vulnerability exists in the dynamic icon API endpoint "GET /api/icon/getDynamicIcon" when type=8, attacker-controlled content is embedded into SVG output without escaping. Because the endpoint is unauthenticated and returns image/svg+xml, a crafted URL can inject executable SVG/HTML event handlers (for example onerror) and run JavaScript in the SiYuan web origin. This can be chained to perform authenticated API actions and exfiltrate sensitive data when a logged-in user opens the malicious link. This issue has been patched in version 3.5.9.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00701 53rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed siyuan (siyuan-note): 3.5.9github.com/siyuan-note/siyuan/kernel (Go): 0.0.0-20260304034809-d68bd5a79391

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
siyuan-notesiyuanbefore 3.5.93.5.9Patch availableCNA
—github.com/siyuan-note/siyuan/kernel (Go)before 0.0.0-20260304034809-d68bd5a793910.0.0-20260304034809-d68bd5a79391Patch availableGHSA-6865-qjcf-286f
  • siyuan Vendorsiyuan-note Affected before 3.5.9 Fixed in 3.5.9 Patch available CNA
  • github.com/siyuan-note/siyuan/kernel (Go) Vendor— Affected before 0.0.0-20260304034809-d68bd5a79391 Fixed in 0.0.0-20260304034809-d68bd5a79391 Patch available GHSA-6865-qjcf-286f

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*before 3.5.9Vulnerablesiyuan-note
  • cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:* Versions before 3.5.9 Vulnerable ·siyuan-note

Remediation

  • Fix · CNA siyuan (siyuan-note) Fixed in 3.5.9
  • Fix · GHSA-6865-qjcf-286f github.com/siyuan-note/siyuan/kernel (Go) Fixed in 0.0.0-20260304034809-d68bd5a79391 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-29183
  2. 2026-10-03 Alias added: GHSA-6865-qjcf-286f

References

Exploit 1

Advisory 1

Other 2

  • TI-2026-26050 SiYuan has directory traversal within its publishing service CVSS 3.1CRITICAL 9.8
  • TI-2026-25256 SiYuan: Authorization Bypass Allows Arbitrary SQL Execution via Search API CVSS 3.1CRITICAL 9.8
  • TI-2024-35827 A SQL injection vulnerability was discovered in Siyuan 3.1.11 in /getHistoryItems. CVSS 3.1CRITICAL 9.8
  • TI-2024-35826 A SQL injection vulnerability has been identified in Siyuan 3.1.11 via the ids array parameter in /batchGetBlockAttrs. CVSS 3.1CRITICAL 9.8
  • TI-2024-35825 A SQL injection vulnerability has been identified in Siyuan 3.1.11 via the id parameter at /getAssetContent. CVSS 3.1CRITICAL 9.8
  • TI-2024-35824 A SQL injection vulnerability has been identified in Siyuan 3.1.11 via the notebook parameter in /searchHistory. CVSS 3.1CRITICAL 9.8
See all 54 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences