Path Traversal in Siyuan-Note Siyuan
CVE-2026-116168
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/siyuan-note/siyuan/security/advisories/GHSA-q768-4j87-gf3w (vendor-advisory)
- www.vulncheck.com/advisories/siyuan-before-3.8.7-path-traversal-local-file-read… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116168?
- CVE-2026-116168 is a medium-severity vulnerability in Siyuan-Note Siyuan, classified under Path Traversal. CVSS score: 6.2/10. Published 2026-10-25.
- How severe is CVE-2026-116168?
- Medium severity. CVSS v3 base score is 6.2 out of 10.