CVE-2026-32767

Critical

Description

SiYuan is a personal knowledge management system. Versions 3.6.0 and below contain an authorization bypass vulnerability in the /api/search/fullTextSearchBlock endpoint. When the method parameter is set to 2, the endpoint passes user-supplied input directly as a raw SQL statement to the underlying SQLite database without any authorization or read-only checks. This allows any authenticated user — including those with the Reader role — to execute arbitrary SQL statements (SELECT, DELETE, UPDATE, DROP TABLE, etc.) against the application's database. This is inconsistent with the application's own security model: the dedicated SQL endpoint (/api/query/sql) correctly requires both CheckAdminRole and CheckReadonly middleware, but the search endpoint bypasses these controls entirely. This issue has been fixed in version 3.6.1.

SeverityCritical
CVSS9.8
Exploit probability—
ProductB3log Siyuan
PublishedMar 20, 2026
First seenMar 20, 2026

How to fix

Update
  • b3log siyuan3.6.1 or later

Affected products

ProductAffected versionsFixed in
b3log siyuanv < 3.6.13.6.1
github.com/siyuan-note/siyuan/kernelGov ≤ 0.0.0-20260313024916-fd6526133bb3, No range specified—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.