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Vulnerability record · CVE-2026-73044 · published 15 August 2026

CVE-2026-73044: Cross-site scripting vulnerability

SiYuan versions before v3.7.4 fail to validate or escape table column width values, allowing stored cross-site scripting injection into style attributes. Attackers can inject malicious payloads through the setAttrViewColWidth API that break out of style attributes and inject event handlers on every table cell, executing arbitrary code in the Electron renderer with Node integration enabled.

9.4 CVSS 4.0 Critical EPSS 0.43% · top 65.5% CWE-79 · Cross-site scripting Deferred
9.4CVSS 4.0 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
26 Aug 2026Last modified by NVD

Description

SiYuan versions before v3.7.4 fail to validate or escape table column width values, allowing stored cross-site scripting injection into style attributes. Attackers can inject malicious payloads through the setAttrViewColWidth API that break out of style attributes and inject event handlers on every table cell, executing arbitrary code in the Electron renderer with Node integration enabled.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-rj55-w3xr-gj62
https://www.vulncheck.com/advisories/siyuan-before-stored-cross-site-scripting-via-column-width
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-rj55-w3xr-gj62

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Source: NIST National Vulnerability Database (record CVE-2026-73044), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.