CVE-2019-15499: Hackmd Codimd

Medium severity, CVSS 6.1. EPSS: 0.9% chance of exploitation in the next 30 days.

CodiMD 1.3.1, when Safari is used, allows XSS via an IFRAME element with allow-top-navigation in the sandbox attribute, in conjunction with a data: URL.

Affected products

• Hackmd Codimd: version 1.3.1 only

Published 2019-08-23. Last modified 2026-06-17.