CVE-2019-12136: Boostio Boostnote

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

There is XSS in BoostIO Boostnote 0.11.15 via a label named mermaid, as demonstrated by a crafted SRC attribute of an IFRAME element.

Affected products

• Boostio Boostnote: version 0.11.15 only

Published 2019-05-16. Last modified 2026-06-17.