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TI-2026-51021 Aliases CVE-2026-72795GHSA-h6w7-xxcf-w2mq

SiYuan before v3.7.4 Information Disclosure via Embed Block

Priority HIGH 79CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

SiYuan versions before v3.7.4 fail to filter embedded block content by publish access in the getBlockDOMWithEmbed and getBlockDOMsWithEmbed endpoints. Attackers can request published blocks containing embed queries to read content from password-protected, hidden, or forbidden documents without authorization.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00305 23rd percentileScored 2026-11-08
Fix Fixed siyuan (siyuan-note): 3.7.4github.com/siyuan-note/siyuan/kernel (Go): 0.0.0-20260725125659-1ca1c3c9d94b

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

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 3.7.43.7.4Patch availableCNA
—github.com/siyuan-note/siyuan/kernel (Go)before 0.0.0-20260725125659-1ca1c3c9d94b0.0.0-20260725125659-1ca1c3c9d94bPatch availableGHSA-h6w7-xxcf-w2mq
  • siyuan Vendorsiyuan-note Affected before 3.7.4 Fixed in 3.7.4 Patch available CNA
  • github.com/siyuan-note/siyuan/kernel (Go) Vendor— Affected before 0.0.0-20260725125659-1ca1c3c9d94b Fixed in 0.0.0-20260725125659-1ca1c3c9d94b Patch available GHSA-h6w7-xxcf-w2mq

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*——siyuan-note
  • cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:* Versions — — ·siyuan-note

Remediation

  • Fix · CNA siyuan (siyuan-note) Fixed in 3.7.4
  • Fix · GHSA-h6w7-xxcf-w2mq github.com/siyuan-note/siyuan/kernel (Go) Fixed in 0.0.0-20260725125659-1ca1c3c9d94b Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    siyuan-note siyuan 3.7.4

    21 records Highest priority Priority HIGH 12 HIGH, 4 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2026-51020 siyuan before v3.7.4 Session Cookie Key Disclosure via getConfPriority HIGH 79
    • TI-2026-51019 SiYuan before v3.7.4 Information Disclosure via /api/system/getConfPriority HIGH 79
    • TI-2026-51015 SiYuan before v3.7.4 Authentication Bypass via Encrypted NotebooksPriority HIGH 79
    Show all 21 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-72795
  2. 2026-10-03 Alias added: GHSA-h6w7-xxcf-w2mq

References

Advisory 2

Other 2

  • TI-2026-48492 SiYuan before v3.7.3 SQL Injection via searchDocs CVSS 4.0CRITICAL 9.9
  • TI-2026-48491 SiYuan before v3.7.3 SQL Injection via searchEmbedBlock CVSS 4.0CRITICAL 9.9
  • TI-2026-48490 SiYuan before v3.7.3 SQL Injection via fullTextSearchAssetContent CVSS 4.0CRITICAL 9.9
  • TI-2026-47010 SiYuan before v3.7.2 Unauthenticated Administrator Takeover via MCP CVSS 4.0CRITICAL 10.0
  • 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
See all 242 →

Sources

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