CVE-2024-49362: Remote Code Execution on click of <a> Link in markdown preview

November 14, 2024 (updated January 30, 2025)

There is a vulnerability in Joplin-desktop that leads to remote code execution (RCE) when a user clicks on an <a> link within untrusted notes. The issue arises due to insufficient sanitization of <a> tag attributes introduced by the Mermaid. This vulnerability allows the execution of untrusted HTML content within the Electron window, which has full access to Node.js APIs, enabling arbitrary shell command execution.

References

github.com/advisories/GHSA-hff8-hjwv-j9q7
github.com/laurent22/joplin
github.com/laurent22/joplin/security/advisories/GHSA-hff8-hjwv-j9q7
nvd.nist.gov/vuln/detail/CVE-2024-49362

Code Behaviors & Features

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