Vulnerability in The Document Foundation LibreOffice

[ Description ]Official description

LibreOffice Calc can link a cell range to an external csv data source, and the link is saved in the document. Such a link was fetched while the document loaded, so opening a document could read a local file into the sheet, or make a request to a host of the document's choosing. In fixed versions external data links are updated under the same link update control as other links in a spreadsheet.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund5 Oct 2026WID-SEC-2026-3738

  LibreOffice: Multiple vulnerabilities Translated from German

  Risk highCVE-2026-63277CVE-2026-63266CVE-2026-63270+3 more CVEs

[ References ]References

• www.libreoffice.org/about-us/security/advisories/cve-2026-63267