CVE-2026-101091

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 4.0

7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

7.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 24% of CVEs (scores of 2026-10-25)

CWE

CWE-89

Published

2026-09-28

Modified

2026-09-29

Record from

the NVD, synced 2026-10-19

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
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-67p9-hm94-xwf3

Check your stackJSON