In Midori Browser 0.5.11 (on Windows 10), Content Security Policy (CSP) is not applied correctly to all parts of multipart content sent with the multipart/x-mixed-replace MIME type. This could result in script running where CSP should have blocked it, allowing for cross-site scripting (XSS) and other attacks when the product renders the content as HTML. Remediating this would also need to consider the polyglot case, e.g., a file that is a valid GIF image and also valid JavaScript.

Midori before 0.2.5, when WebKitGTK+ before 1.1.14 or LibSoup before 2.29.91 is used, does not verify X.509 certificates, which allows man-in-the-middle attackers to spoof arbitrary https web sites via a crafted server certificate, a related issue to CVE-2010-3312.