CVE-2026-109309

SiYuan v3.7.0 before v3.8.6 contains an absolute path traversal vulnerability in the kernel's private plugin HTTP server, which passes a kernel plugin handler's ResponseFile.Path to gin's Context.File without validation. Attackers supplying a malicious kernel plugin can return an absolute path to read any file readable by the SiYuan process, including the API token and conf.json.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/siyuan-note/siyuan/commit/c6494375ea40ee973f430f0e85d50f1862a30d81
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-phmw-4rgv-r4xv
https://www.vulncheck.com/advisories/siyuan-3.7.0-before-3.8.6-arbitrary-file-read-via-plugin-responsefile-path

Configurations

No configuration.

History

12 Oct 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-12 17:17

Updated : 2026-10-13 17:17

NVD link : CVE-2026-109309

Mitre link : CVE-2026-109309

CVE.ORG link : CVE-2026-109309

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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