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5.4 Medium

CVE-2026-6047 LibreOffice can import documents in the OOXML format (DOCX)

Description

LibreOffice can import documents in the OOXML format (DOCX). A heap buffer overflow existed when replaying deferred parser events for a text box element. A handler object was assumed to be of one type and written to at that type's field layout, but it could be a smaller object, so the write landed past the end of the allocation. In fixed versions the type is checked before the write.

Affected products and versions

Product Affected versions Fixed in
LibreOffice 26.2 26.2 → latest No fix stated
LibreOffice 25.8 25.8 → latest No fix stated

References

Timeline

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