CVE-2026-55660 TinaCMS: Cross-origin postMessage handlers and rich-text URL-sanitization bypass enable stored XSS and session takeover

Tina is a headless content management system. In versions prior to @tinacms/app 2.5.6 and tinacms 3.9.3, cross-origin postMessage handlers and a rich-text URL-sanitization bypass enable stored XSS and session takeover. The library registers window message listeners — the useTina overlay handler,...

NPM: TinaCMS: Cross-origin postMessage handlers and rich-text URL-sanitization bypass enable stored XSS and session takeover

NPM: TinaCMS: Cross-origin postMessage handlers and rich-text URL-sanitization bypass enable stored XSS and session takeover vulnerability discovered by ? in WordPress Npm tinacms versions 3.9.3...

CVE-2026-2345: Origin Validation Error

Proctorio Chrome Extension is a browser extension used for online proctoring. The extension contains multiple window.addEventListener'message', ... handlers that do not properly validate the origin of incoming messages. Specifically, an internal messaging bridge processes messages based solely on...

Ghost CMS 4.3.2 - Cross-Origin Admin Takeover

Ghost is one of the most popular Node.js-based Content Management Systems CMS. According to the vendor, there are currently more than 2.5 million installs of it and the project has more than 38k stars on GitHub. During our research on open-source applications, we analyzed the code and found a...

Chrome for Android Enables Site Isolation Security Feature for All Sites with Login

After enabling 'Site Isolation' security feature in Chrome for desktops last year, Google has now finally introduced 'the extra line of defence' for Android smartphone users surfing the Internet over the Chrome web browser. In brief, Site Isolation is a security feature that adds an additional...