CVE-2026-73044

criticalCVSS 9covered by 1 sourcefirst seen 2026-08-15

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.

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Exploitation outlook

Low exploitation risk0.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.

Advisory coverage (1)

criticalCVE-2026-73044: SiYuan versions before v3.7.4 fail to validate or escape table column width values, allowing s…nvd · 2026-08-15

External references

NVD record for CVE-2026-73044

CVE.org record

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