CVE-2026-63268

Announced: Oct 5, 2026

Fixed in: LibreOffice 26.2.5/26.8.0

Description:

LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document.

A link of the sql type could name a folder of local text files as a database, so opening a document could read a local text file into the sheet.

In fixed versions only the csv, html and xml data providers are restored when a document is loaded.

All users are recommended to upgrade to LibreOffice >= 26.2.5 or >= 26.8.0 to avoid this problem.

Credits:

Thanks to Thomas Rinsma and Edoardo Geraci from Codean Labs for reporting this issue.

Thanks to Caolán McNamara of Collabora Productivity for providing the fix.

References:

CVE-2026-63268