CVE-2026-45147: CWE-285: Improper Authorization in siyuan-note siyuan
CVE-2026-45147 is an improper authorization vulnerability in the SiYuan personal knowledge management system versions prior to 3. 7. 0. The POST /api/tag/getTag endpoint performs a configuration write operation but only enforces basic authentication checks, omitting required admin and readonly role checks. This allows any authenticated user, including those with read-only roles, to modify the workspace configuration by changing tag sorting settings. The vulnerability is fixed in version 3. 7. 0. The CVSS score is 4. 3, indicating a medium severity impact focused on integrity.
AI Analysis
Technical Summary
SiYuan versions before 3.7.0 have an authorization flaw in the POST /api/tag/getTag API endpoint. The endpoint is protected only by model.CheckAuth, lacking checks for admin or readonly roles, despite performing writes to the workspace configuration file (conf.json). Authenticated users with limited roles can exploit this to reorder tags and trigger saving the entire workspace configuration, potentially altering settings they should not control. This vulnerability is addressed in SiYuan 3.7.0.
Potential Impact
The vulnerability allows authenticated users with read-only or limited roles to modify the workspace configuration by changing tag sorting. This impacts the integrity of the workspace configuration but does not affect confidentiality or availability. There is no indication of exploitation in the wild.
Mitigation Recommendations
Upgrade SiYuan to version 3.7.0 or later, where this authorization issue is fixed. Since this is not a cloud service, users must apply the update themselves. Patch status is confirmed by the vendor stating the fix is in version 3.7.0.
CVE-2026-45147: CWE-285: Improper Authorization in siyuan-note siyuan
Description
CVE-2026-45147 is an improper authorization vulnerability in the SiYuan personal knowledge management system versions prior to 3. 7. 0. The POST /api/tag/getTag endpoint performs a configuration write operation but only enforces basic authentication checks, omitting required admin and readonly role checks. This allows any authenticated user, including those with read-only roles, to modify the workspace configuration by changing tag sorting settings. The vulnerability is fixed in version 3. 7. 0. The CVSS score is 4. 3, indicating a medium severity impact focused on integrity.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
SiYuan versions before 3.7.0 have an authorization flaw in the POST /api/tag/getTag API endpoint. The endpoint is protected only by model.CheckAuth, lacking checks for admin or readonly roles, despite performing writes to the workspace configuration file (conf.json). Authenticated users with limited roles can exploit this to reorder tags and trigger saving the entire workspace configuration, potentially altering settings they should not control. This vulnerability is addressed in SiYuan 3.7.0.
Potential Impact
The vulnerability allows authenticated users with read-only or limited roles to modify the workspace configuration by changing tag sorting. This impacts the integrity of the workspace configuration but does not affect confidentiality or availability. There is no indication of exploitation in the wild.
Mitigation Recommendations
Upgrade SiYuan to version 3.7.0 or later, where this authorization issue is fixed. Since this is not a cloud service, users must apply the update themselves. Patch status is confirmed by the vendor stating the fix is in version 3.7.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-08T20:44:38.963Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a062b6cec166c07b00def93
Added to database: 5/14/2026, 8:07:08 PM
Last enriched: 5/14/2026, 8:22:36 PM
Last updated: 5/14/2026, 9:09:49 PM
Views: 2
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