CVE-2026-73049: Incorrect Authorization in siyuan-note siyuan
SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the getAttributeViewBacklinks endpoint that consults the forbidden access list instead of the visibility list when filtering backlinks. Anonymous readers can supply a publicly visible database row identifier to discover hidden-tier documents that reference it, receiving the database name, row title, and document path of hidden documents.
AI Analysis
Technical Summary
CVE-2026-73049 describes an incorrect authorization vulnerability in SiYuan note-taking software versions prior to v3.7.4. The vulnerability exists in the getAttributeViewBacklinks endpoint, which filters backlinks using a forbidden access list rather than the intended visibility list. This flaw allows anonymous users to query a publicly visible database row identifier and receive metadata about hidden-tier documents that reference it, exposing database names, row titles, and document paths that should remain confidential.
Potential Impact
The vulnerability enables unauthorized information disclosure to anonymous users. Attackers can learn about hidden documents that reference publicly visible database rows, potentially revealing sensitive metadata such as database names, document titles, and paths. This exposure could aid in further reconnaissance or targeted attacks but does not indicate direct modification or deletion capabilities.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor vendor communications for updates and consider restricting access to sensitive data until a fix is available.
CVE-2026-73049: Incorrect Authorization in siyuan-note siyuan
Description
SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the getAttributeViewBacklinks endpoint that consults the forbidden access list instead of the visibility list when filtering backlinks. Anonymous readers can supply a publicly visible database row identifier to discover hidden-tier documents that reference it, receiving the database name, row title, and document path of hidden documents.
CVSS v4.0
Score 6.9medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-73049 describes an incorrect authorization vulnerability in SiYuan note-taking software versions prior to v3.7.4. The vulnerability exists in the getAttributeViewBacklinks endpoint, which filters backlinks using a forbidden access list rather than the intended visibility list. This flaw allows anonymous users to query a publicly visible database row identifier and receive metadata about hidden-tier documents that reference it, exposing database names, row titles, and document paths that should remain confidential.
Potential Impact
The vulnerability enables unauthorized information disclosure to anonymous users. Attackers can learn about hidden documents that reference publicly visible database rows, potentially revealing sensitive metadata such as database names, document titles, and paths. This exposure could aid in further reconnaissance or targeted attacks but does not indicate direct modification or deletion capabilities.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor vendor communications for updates and consider restricting access to sensitive data until a fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-10T19:06:03.365Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7f0286bf8831d539fec91b
Added to database: 08/14/2026, 11:56:54 UTC
Last enriched: 08/14/2026, 12:12:09 UTC
Last updated: 08/14/2026, 16:37:45 UTC
Views: 7
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