CVE-2026-63266NVD

Vulnerability Summary

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.

Severity Level

MEDIUM(6.8)

Published Date

Oct 5, 2026

Last Modified

Oct 5, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

Data Pending

Root Weakness (CWE)

CWE-22: Path Traversal ↗

The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory.

CVSS v4.0 Base Metrics — Score 6.8 (MEDIUM)

Attack VectorLocal

Attack ComplexityLow

Attack RequirementsNone

Privileges RequiredNone

User InteractionPassive

Confidentiality (Vulnerable System)None

Integrity (Vulnerable System)High

Availability (Vulnerable System)None

Confidentiality (Subsequent System)None

Integrity (Subsequent System)None

Availability (Subsequent System)None

Affected & Patched Versions

Affected Versions

The Document Foundation LibreOffice >= 26.2 and < < 26.2.5

Patched Versions

The Document Foundation LibreOffice < 26.2.5

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