CVE-2026-63277
High
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.
SeverityHigh
CVSS8.5
Exploit probability—
ProductLibreOffice
PublishedOct 5, 2026
First seenOct 5, 2026
Weakness typeCWE-829CWE-829
How to fix
Update
- The Document Foundation LibreOffice< 26.2.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| The Document Foundation LibreOffice | 26.2 ≤ v < < 26.2.5 | < 26.2.5 |
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