CVE-2026-118680 Details
Description
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.
A path traversal vulnerability has been identified in SiYuan versions 3.8.7 through 3.8.8. The issue arises because the application fails to properly normalize Windows GLOBALROOT device-namespace aliases, allowing attackers to bypass the IsSensitivePath denylist. By using a GLOBALROOT-prefixed path with the importStdMd function, it is possible to copy sensitive information, such as the API token and TLS private key, into a publicly accessible directory.
Users are advised to update to SiYuan version 3.8.9 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 28, 2026CISA-ADP
Assessed Nov 2, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/siyuan-note/siyuan/security/advisories/GHSA-gg3p-r4g8-vxg2 | CISA-ADP | AdvisoryExploitTechnical AnalysisVendor |
| https://github.com/siyuan-note/siyuan/security/advisories/GHSA-gg3p-r4g8-vxg2 | [email protected] | AdvisoryExploitTechnical AnalysisVendor |
| https://www.vulncheck.com/advisories/siyuan-3.8.7-through-3.8.8-path-traversal-via-globalroot-alias | [email protected] | AdvisoryVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| SiYuan | >= 3.5.4, <= 3.8.8 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 2, 2026 | CVE Modified | CISA-ADP |
| Oct 28, 2026 | New CVE Received | [email protected] |