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Back to active CVEs
Medium · CVSS 6.9CVE-2026-116168

SiYuan before v3.8.7 Path Traversal Local File Read via MCP Asset ToolCVE-2026-116168

Answer in brief

CVE-2026-116168 records a Medium severity (CVSS 6.9) vulnerability in SiYuan before v3.8.7 Path Traversal Local File Read via MCP Asset Tool. The current sources do not mark it as known exploited. The current feed maps siyuan-note/siyuan (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 25, 2026Updated Oct 25, 2026Source checked Oct 25, 2026First seen by HOL Oct 25, 2026Material review Oct 25, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.9
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps siyuan-note/siyuan (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
siyuan-note/siyuangeneric>=0 <3.8.73.8.7

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for siyuan-note/siyuan.
  2. 2Review the reported fix. Update siyuan-note/siyuan to 3.8.7 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 25, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 25, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 25, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

SiYuan before 3.8.7 contains a path traversal vulnerability in the MCP asset tool because validateAssetUploadPaths relies on an incomplete sensitive-path blacklist that omits .env and other secret files. Authenticated attackers driving the MCP asset upload action can copy such local files into the workspace and read them back via /assets/ over HTTP.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • SiYuan 3.6.0 before 3.8.7 Cleartext Transmission via Unenforced networkServeTLS SettingSame siyuan-note/siyuan package
  • SiYuan 2.9.0 before 3.8.7 XSS via check-auth to ParameterSame siyuan-note/siyuan package
  • SiYuan 2.10.0 before 3.8.7 Stored XSS via KaTeX \href in Math BlocksSame siyuan-note/siyuan package
  • SiYuan before v3.8.7 SQL Injection via History Search op and querySame siyuan-note/siyuan package
  • SiYuan 3.5.4 before 3.8.7 Sensitive Path Bypass via Windows Extended-Length PrefixSame siyuan-note/siyuan package
  • Rclone before 1.75.2 Path Traversal via serve webdav MKCOLAlso CWE-22

Record context

Vulnerability class
Path Traversal
EPSS
Not reported
CWE IDs
CWE-22
Source
CVE List V5
Source checked
Oct 25, 2026
References
2 linked sources
Open source record