CVE-2026-63266 — Arbitrary file write via calcext:data-mappings, sql provider and Firebird backup functionality

CVE-2026-63266

Arbitrary file write via calcext:data-mappings, sql provider and Firebird backup functionality PUBLISHED

Description (CNA)

LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. Through such a link a document could open an embedded Firebird database that wrote a file to any location the user could write to. In fixed versions an embedded Firebird database can open or create files only inside its own private directory.

Affected (CNA)

Vendor / product	Versions
The Document Foundation / LibreOffice	affected 26.2 before < 26.2.5

CWE

CWE-22

References

https://www.libreoffice.org/about-us/security/advisories/cve-2026-63266

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.