CVE-2026-87807
siyuan versions before v3.8.2 contain an authenticated SQL injection vulnerability in the fullTextSearchBlock endpoint's method=1 query parameter. Attackers can inject UNION SELECT statements to read the entire blocks table, bypassing publish-access controls and exposing all document content and sensitive attributes.
- Score
- CVSS 4.0 8.7 High
- Status
- Deferred - disclosure@vulncheck.com
- Published
- 2026-09-09
- Last modified
- 2026-10-08
- Weaknesses
- CWE-89
Affected products
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-336w-67gx-gx2h
- https://www.vulncheck.com/advisories/siyuan-before-3.8.2-sql-injection-via-fulltextsearchblock
