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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
B3log Subscribe
Siyuan Subscribe

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Mon, 28 Sep 2026 22:15:00 +0000

Type Values Removed Values Added
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.
Title SiYuan before v3.8.4 SQL Injection via Block Query Embed
First Time appeared B3log
B3log siyuan
Weaknesses CWE-89
CPEs cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*
Vendors & Products B3log
B3log siyuan
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N'}

cvssV4_0

{'score': 7.1, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-28T22:00:17.204Z

Reserved: 2026-09-27T20:29:07.433Z

Link: CVE-2026-101091

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-09-28T22:17:30.413

Modified: 2026-09-28T22:17:30.550

Link: CVE-2026-101091

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-28T23:30:09Z

Weaknesses