CVE-2026-74906: Incorrect Authorization in siyuan-note siyuan
SiYuan note-taking software versions before 3.7.4 have an incorrect authorization vulnerability affecting eight publish-mode reader-facing endpoints. These endpoints incorrectly filter content using a visibility list instead of a disabled list, allowing anonymous users to access documents explicitly marked as forbidden from publishing. This vulnerability enables unauthorized discovery and reading of restricted content via search, backlink, asset content, saved criteria, recent documents, graph, and tag endpoints.
AI Analysis
Technical Summary
CVE-2026-74906 is an incorrect authorization vulnerability in SiYuan note-taking software prior to version 3.7.4. The flaw exists in eight publish-mode reader-facing endpoints that filter results based on a visibility list rather than the intended disabled list. This logic error permits anonymous visitors to bypass publishing restrictions and access content that should be forbidden. The affected endpoints include search, backlink, asset content, saved criteria, recent documents, graph, and tag functionalities. The vulnerability has a CVSS 4.0 score of 8.7, indicating high severity. There are no known exploits in the wild. The issue is fixed starting with version 3.7.4.
Potential Impact
Unauthorized anonymous users can discover and read content from documents explicitly marked as forbidden from publishing. This leads to a confidentiality breach of restricted documents in SiYuan versions prior to 3.7.4. The vulnerability affects multiple endpoints that expose document content, increasing the risk of sensitive information disclosure.
Mitigation Recommendations
Upgrade SiYuan to version 3.7.4 or later, where this incorrect authorization vulnerability is fixed. No other mitigation is indicated. Patch status is confirmed fixed in v3.7.4.
CVE-2026-74906: Incorrect Authorization in siyuan-note siyuan
Description
SiYuan note-taking software versions before 3.7.4 have an incorrect authorization vulnerability affecting eight publish-mode reader-facing endpoints. These endpoints incorrectly filter content using a visibility list instead of a disabled list, allowing anonymous users to access documents explicitly marked as forbidden from publishing. This vulnerability enables unauthorized discovery and reading of restricted content via search, backlink, asset content, saved criteria, recent documents, graph, and tag endpoints.
CVSS v4.0
Score 8.7high
Affected software
siyuan-note
siyuan
pkg:github/siyuan-note/siyuanRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-74906 is an incorrect authorization vulnerability in SiYuan note-taking software prior to version 3.7.4. The flaw exists in eight publish-mode reader-facing endpoints that filter results based on a visibility list rather than the intended disabled list. This logic error permits anonymous visitors to bypass publishing restrictions and access content that should be forbidden. The affected endpoints include search, backlink, asset content, saved criteria, recent documents, graph, and tag functionalities. The vulnerability has a CVSS 4.0 score of 8.7, indicating high severity. There are no known exploits in the wild. The issue is fixed starting with version 3.7.4.
Potential Impact
Unauthorized anonymous users can discover and read content from documents explicitly marked as forbidden from publishing. This leads to a confidentiality breach of restricted documents in SiYuan versions prior to 3.7.4. The vulnerability affects multiple endpoints that expose document content, increasing the risk of sensitive information disclosure.
Mitigation Recommendations
Upgrade SiYuan to version 3.7.4 or later, where this incorrect authorization vulnerability is fixed. No other mitigation is indicated. Patch status is confirmed fixed in v3.7.4.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-17T10:48:45.738Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a844364c6e8be03322294a6
Added to database: 08/18/2026, 11:35:00 UTC
Last enriched: 09/11/2026, 23:18:26 UTC
Last updated: 10/02/2026, 02:46:06 UTC
Views: 63
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