TI-2026-82169 Aliases CVE-2026-118680 GHSA-7372-6g6p-gr33

Path traversal in SiYuan exposes API token and TLS private key

MEDIUM 60CWE-22Published 2026-10-28 · Updated 2026-11-02

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Attack requirements: Present
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

Summary

SiYuan 3.8.7 through 3.8.8 fails to normalize Windows GLOBALROOT device-namespace aliases, which bypasses the sensitive path denylist (CWE-22). A network attacker with high privileges can use the importStdMd function to copy the API token and TLS private key into the publicly served assets directory.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

SiYuan 3.8.7 through 3.8.8 fails to normalize Windows GLOBALROOT device-namespace aliases, bypassing the IsSensitivePath denylist. Attackers can invoke importStdMd with a GLOBALROOT-prefixed path to copy the API token and TLS private key into the publicly served assets directory.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00459 40th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
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	3.8.7 – 3.8.8	—	No fix listed	CNA

siyuan Vendorsiyuan-note Affected 3.8.7 – 3.8.8 Fixed in — No fix listed 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

The sources list no fixed version for SiYuan.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Timeline

2026-10-28 Threatist record created from CVE-2026-118680
2026-10-28 Alias added: GHSA-7372-6g6p-gr33
2026-10-30 Priority changed: MEDIUM → LOW
2026-11-02 CISA SSVC decision points changed
2026-11-02 Priority changed: LOW → MEDIUM

References

Advisory 1

GitHub Security Advisory (GHSA-gg3p-r4g8-vxg2)

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