medium6.5
CVE-2026-87809
Siyuan before v3.8.2 fails to apply publish-access filtering to embedded blocks before rendering in the /api/export/preview and /api/lute/copyStdMarkdown endpo…
Impact
Siyuan before v3.8.2 fails to apply publish-access filtering to embedded blocks before rendering in the /api/export/preview and /api/lute/copyStdMarkdown endpoints. Attackers with reader access can retrieve the full rendered content of private, hidden, or publish-disabled blocks by accessing public documents containing embed queries that select those blocks.
Affected products
| Product | Affected versions |
|---|---|
| Siyuan | before 3.8.2 |
Versions were read from the advisory text. No structured product data has been published for this record yet.