TI-2026-52586 Aliases CVE-2026-74867 GHSA-ph2h-92xh-5vmg

SiYuan before 3.7.4 Cross-Site Request Forgery via CheckAuth

LOW 11CWE-352Published 2026-08-17 · Updated 2026-08-18

Key facts

Attack vector: Network
Privileges required: None
User interaction: Passive
Attack complexity: High
Attack requirements: Present
Impact type: Tampering
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-352.

Summary

SiYuan versions before 3.7.4 contain a cross-site request forgery vulnerability in the session-cookie authentication branch of CheckAuth() that lacks Origin/Referer validation and sets no explicit SameSite attribute on session cookies. Attackers can craft malicious web pages that perform unauthorized actions on behalf of authenticated users by submitting requests with valid session cookies, relying on browser default SameSite policies rather than server-enforced protections.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00131 2nd percentileScored 2026-11-07

Fix Fixed siyuan (siyuan-note): 3.7.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
siyuan-note	siyuan	before 3.7.4	3.7.4	Patch available	CNA

siyuan Vendorsiyuan-note Affected before 3.7.4 Fixed in 3.7.4 Patch available CNA

CPE names Threatist (inferred) · 1

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

CPE	Versions	Role	Vendor
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

Fixed in the same release

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

Release · 2026-08-17
siyuan-note siyuan 3.7.4
7 records Highest priority Priority HIGH 3 HIGH, 3 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-52563 SiYuan before 3.7.4 Unauthenticated Debug Endpoint Information DisclosurePriority HIGH 79
- TI-2026-52562 SiYuan kernel Path Traversal via database_clean MCP toolPriority HIGH 75
- TI-2026-52565 SiYuan before 3.7.4 Local Privilege Escalation via elevator.exePriority HIGH 72
Show all 7 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-74867
2026-10-03 Alias added: GHSA-ph2h-92xh-5vmg

References

Advisory 1

GitHub Security Advisory (GHSA-hhm2-g993-p656)

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