Notesnook is a note-taking app focused on user privacy & ease of use.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Mar 11, 2026 · NIST NVD

   Detected

   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

2. Jun 17, 2026 · NIST NVD

   Updated

   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

Affected

• cpe streetwriters/notesnook desktopversion unspecified
• cpe streetwriters/notesnook mobileversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-31876

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-31876

  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

  nvd.nist.gov

References

• Patch · github.com
• Vendor Advisory · github.com