CVE-2026-59834: Siyuan-Note Siyuan

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

SiYuan is an open-source personal knowledge management system. Prior to 3.7.1, the block search endpoint POST /api/search/fullTextSearchBlock concatenates attacker-controlled paths values into SQL predicates used by non-SQL search modes, allowing an unauthenticated publish visitor to inject a UNION SELECT and return rows from hidden documents by projecting an allowed visible box and path. This issue is fixed in versions 3.7.1.

Affected products

• Siyuan-Note Siyuan: before 3.7.1 (fixed in 3.7.1)

Published 2026-07-09. Last modified 2026-07-10.