CVE-2026-86191 Details
Description
SiYuan versions before v3.8.2 contain an information disclosure vulnerability in the getAttributeViewKeysByID endpoint that allows publish readers to enumerate private attribute view key definitions without verifying parent database visibility. Attackers can access the endpoint to retrieve complete key schemas including sensitive field names and relation definitions from hidden databases.
A vulnerability allowing information disclosure exists in SiYuan versions prior to 3.8.2. The issue arises in the 'getAttributeViewKeysByID' endpoint, where publish readers can enumerate private attribute view key definitions without proper verification of parent database visibility. This flaw enables access to complete key schemas, including sensitive field names and relation definitions, from hidden databases.
To address this vulnerability, it is recommended to resolve the attribute view's mirror blocks and require publish metadata access to the parent database before returning key definitions. This check should be applied to both all-key and selected-key-ID requests.
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 Sep 5, 2026CISA-ADP
Assessed Sep 8, 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-j4qq-w6qx-6839 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/siyuan-note/siyuan/security/advisories/GHSA-j4qq-w6qx-6839 | [email protected] | AdvisoryExploitRemedyVendor |
| https://www.vulncheck.com/advisories/siyuan-before-3.8.2-private-attribute-view-key-enumeration | [email protected] | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| SiYuan | <= 3.8.1 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 8, 2026 | CVE Modified | CISA-ADP |
| Sep 5, 2026 | New CVE Received | [email protected] |