cvedb.io
CVE-2026-31876
MEDIUM · CVSS 5.4
EPSS exploitation probability: 0%
Published 2026-03-11T19:16:04.140 · Last modified 2026-06-17T10:34:40.833

Summary

Notesnook is a note-taking app focused on user privacy & ease of use. Prior to 3.3.9, a Stored Cross-Site Scripting (XSS) vulnerability existed in Notesnook's editor embed component when rendering Twitter/X embed URLs. The tweetToEmbed() function in component.tsx interpolated the user-supplied URL directly into an HTML string without escaping, which was then assigned to the srcdoc attribute of an <iframe>. This vulnerability is fixed in 3.3.9.

Affected products

streetwriters — notesnook_desktop

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.