High 8.0Published Sep 26, 2026

CVE-2026-100645SiYuan 3.7.0 before 3.8.4 Stored XSS via Gallery Kanban

Updated under an hour ago (Oct 27, 2026, 6:40 AM ET)

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It affects siyuan-note siyuan. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.35%, higher than 27% of scored CVEs.

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Exploited in the last 30 days

SiYuan versions 3.7.0 before 3.8.4 contain a stored cross-site scripting vulnerability in gallery and kanban database renderers where field descriptions are not escaped in aria-label attributes. In the Electron desktop app with nodeIntegration enabled, attackers can inject JavaScript that calls Node.js child_process APIs to execute arbitrary commands with user privileges.

CVSS: 8.0 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.35% (percentile 27)
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 8, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

siyuan-note siyuan siyuan_note:siyuan (from the name)	from 3.7.0 before 3.8.4; 3.8.4 not affected	CNA record

References

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-556j-q8c8-qqg3	vendor-advisory
https://www.vulncheck.com/advisories/siyuan-3.7.0-before-3.8.4-stored-xss-via-gallery-kanban	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.