XSS Vulnerability in Joplin Note Taking Application by Laurent A.

CVE-2025-24028

What is CVE-2025-24028?

Joplin, a popular open-source note-taking and to-do application, has a vulnerability arising from discrepancies between its HTML sanitizer's handling of comments and the browser's behavior. This affects users of the Rich Text Editor when opening untrusted notes, potentially allowing malicious scripts to be executed. The Markdown viewer remains insulated from such attacks due to its cross-origin isolation, which prevents direct access to Joplin's top-level window. Users are strongly urged to upgrade to version 3.2.12 to mitigate this risk, as there are no known workarounds for the vulnerability introduced in prior versions.

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