CVE-2020-26287 Stored XSS in mermaid diagrams

HedgeDoc is a collaborative platform for writing and sharing markdown. In HedgeDoc before version 1.7.1 an attacker can inject arbitrary script tags in HedgeDoc notes using mermaid diagrams. Our content security policy prevents loading scripts from most locations, but www.google-analytics.com is...

CVE-2020-26287

Summary (CVE-2020-26287) : HedgeDoc prior to version 1.7.1 is vulnerable to cross-site scripting through injection of arbitrary [removed] tags in notes created via mermaid diagrams. The underlying issue stems from a permissive content security policy that allowed loading scripts from certain orig...