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CVE-2026-100643 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

SiYuan versions before v3.8.4 fail to properly escape four stored Attribute View values in textarea elements, allowing authenticated attackers to inject JavaScript by modifying field descriptions, template sources, select option descriptions, or footer calculation templates. Attackers can execute stored JavaScript when other users open affected database menus, and in the Electron desktop app with nodeIntegration enabled, this leads to command execution with SiYuan process privileges.

Metrics

CVSS 3.x Severity and Vector Strings:

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

CNA: [email protected]CVSS-B:8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-h3p6-c22r-fx2j	[email protected]	AdvisoryTechnical AnalysisVendor
https://www.vulncheck.com/advisories/siyuan-before-3.8.4-stored-xss-via-attribute-view-textarea	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
SiYuan	>= 2.10.8, <= 3.8.3 (semver)
CPE cpe:2.3:a:b3log:siyuan:::::::: Remediation Upgrade: v3.8.4moderate effort

Change History

1 change record found show changes