CVE-2026-73042

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

SiYuan before v3.7.4 fails to properly escape database menu metadata in HTML interpolation, allowing stored values to execute script when users open group, view, or field-edit menus. Attackers can inject markup through field descriptions or names that close containing elements and execute arbitrary code via event handlers, reaching Node built-ins due to Electron's insecure configuration.

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Exploitation outlook

Low exploitation risk0.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.

Advisory coverage (1)

criticalCVE-2026-73042: SiYuan before v3.7.4 fails to properly escape database menu metadata in HTML interpolation, al…nvd · 2026-08-15

External references

NVD record for CVE-2026-73042

CVE.org record

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