CVE-2026-101091

Description

SiYuan versions before v3.8.4 fail to properly validate SQL statements in block query embed blocks executed against siyuan.db. Attackers can craft malicious .sy documents with non-read-only SQL statements that execute automatically during background indexing, rendering, or export operations without authentication.

CVSS Vector

References

• https://github.com/siyuan-note/siyuan/commit/e8ace0c89182c7ee1a1298ff2a849bb6a83dfdec
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-67p9-hm94-xwf3
• https://www.vulncheck.com/advisories/siyuan-before-3.8.4-sql-injection-via-block-query-embed