CVE-2026-8358: CWE-843 Access of Resource Using Incompatible Type ('Type Confusion') in The Document Foundation LibreOffice
LibreOffice Calc can import tracked changes from a spreadsheet document. A heap buffer overflow existed when a document reused the same change identifier for two different kinds of change. The importer then treated one change object as a different, larger type and wrote past the end of its allocation. In fixed versions records with a duplicate identifier are rejected.
CVE-2026-8358: CWE-843 Access of Resource Using Incompatible Type ('Type Confusion') in The Document Foundation LibreOffice
Description
LibreOffice Calc can import tracked changes from a spreadsheet document. A heap buffer overflow existed when a document reused the same change identifier for two different kinds of change. The importer then treated one change object as a different, larger type and wrote past the end of its allocation. In fixed versions records with a duplicate identifier are rejected.
CVSS v4.0
Score 5.4medium
Affected software
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Document Fdn.
- Date Reserved
- 2026-05-11T19:01:49.347Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a303db60b89be6888695b2b
Added to database: 6/15/2026, 6:00:22 PM
Last updated: 6/15/2026, 6:00:48 PM
Views: 1
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