CVE-2026-32767 SiYuan: Authorization Bypass Allows Arbitrary SQL Execution via Search API
Authenticated users can execute arbitrary SQL commands via the search API due to missing authorization checks, allowing data modification or deletion.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-32767?
CVE-2026-32767 is a critical SQL injection vulnerability in B3log Siyuan, published on 20 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-32767?
3 open source packages ship an affected version, including github.com/siyuan-note/siyuan/kernel. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/siyuan-note/siyuan/kernel Go | All versions | None |
github.com/siyuan-note/siyuan/kernel Go | All versions to 0.0.0-20260313024916-fd6526133bb3 | None |
github.com/siyuan-note/siyuan/kernel Go | All versions to 0.0.0-20260313024916-fd6526133bb3 | None |
Products include B3log Siyuan.
How do I fix CVE-2026-32767?
Upgrade to a fixed version.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-32767 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32767 exists.
Other vulnerabilities in B3log Siyuan
- CVE-2026-32938 SiYuan has an Arbitrary File Read in its Desktop Publish Service
- CVE-2026-33669 SiYuan has Arbitrary Document Reading within the Publishing Service
- CVE-2026-33670 SiYuan has directory traversal within its publishing service
- CVE-2024-53504 SQL injection in n/a
- CVE-2024-53505 SQL injection in n/a
Sources
Also known as CLEANSTART-2026-MD29809, GHSA-j7wh-x834-p3r7, GO-2026-4716.