CVE-2026-63277

Description

LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. A document could name a Java database driver for such a link to be loaded from a remote location, so opening the document could run Java code from that location. In fixed versions an entry in a Java class path has to be a file URL.

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Weakness Type (CWE)

CWE-829 CWE-829

References

Other References

https://www.libreoffice.org/about-us/security/advisories/cve-2026-63277

Frequently Asked Questions

What is CVE-2026-63277? +

LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. A document could name a Java database driver for such a link to be loaded from a remote location, so opening the document could run Java code from that location. In fixed versions an entry in a Java class path has to be a file URL.

How do I check if I'm vulnerable to CVE-2026-63277? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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