CVE-2026-101091

High

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.

SeverityHigh

CVSS7.1

Exploit probability—

ProductSiyuan

PublishedSep 28, 2026

First seenSep 28, 2026

Weakness typeCWE-89SQL injection

How to fix

Update

siyuan-note siyuan3.8.4 or later

Patches

github.com/siyuan-note/siyuan/commit/e8ace0c89182c7ee1a1298ff2a849bb6a83dfdec

Vendor advisories

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

Affected products

Product	Affected versions	Fixed in
siyuan-note siyuan	v < 3.8.4	3.8.4

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