MEDIUMVulnerability
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 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.
Properties
- severity
- MEDIUM
- score
- 6.5
- cve_id
- CVE-2026-87809
- signal_observed_at
- 2026-09-18T21:50:45+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- published_at
- 2026-09-09T12:17:15.650
- last_modified
- 2026-09-18T18:17:33.600
Related Entities (2)
DESCRIBED_BY (1)
→[Source]NVD
HAS_WEAKNESS (1)
→[Weakness]Authorization Bypass Through User-Controlled Key
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