CVE-2026-101091

HIGH 7.1

SiYuan before v3.8.4 SQL Injection via Block Query Embed

CVSS Score

7.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-89
Vendor	siyuan-note
Product	siyuan
Published	Sep 28, 2026

Stay Ahead of the Next One

Get instant alerts for siyuan-note siyuan

Be the first to know when new high vulnerabilities affecting siyuan-note siyuan are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

Affected Versions

siyuan-note / siyuan

0 < 3.8.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

manus-pi