CVE-2026-63277

RCE via calcext:data-mappings, sql provider and jdbc connector

State: Published
Severity: 8.5 High
Published: Oct 5, 2026
Updated: Oct 5, 2026
Reserved: Jul 16, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.5 High	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	Document Fdn.

Weaknesses

CWE-829 Inclusion of Functionality from Untrusted Control Sphere

Affected Products

Product	Versions
LibreOfficeThe Document Foundation	26.2 to before < 26.2.5Affected

References

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

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