CVE-2026-101091

SiYuan before v3.8.4 SQL Injection via Block Query Embed

State: Published
Severity: 7.1 High
Published: Sep 28, 2026
Updated: Sep 29, 2026
Reserved: Sep 27, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	7.1 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N	VulnCheck

Weaknesses

CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Affected Products

Product	Versions
siyuansiyuan-note	before 3.8.4Affected 3.8.4Not affected

References

GitHub Security Advisory (GHSA-67p9-hm94-xwf3)vendor-advisory
https://github.com/siyuan-note/siyuan/commit/e8ace0c89182c7ee1a1298ff2a849bb6a83dfdecpatch
VulnCheck Advisory: SiYuan before v3.8.4 SQL Injection via Block Query Embedthird-party-advisory

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