CVE-2026-8357: CWE-787 Out-of-bounds Write in The Document Foundation LibreOffice
LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was allocated one element too small for that worst case, so such a formula wrote one element past its end. In fixed versions the array is sized to hold the largest possible nesting.
CVE-2026-8357: CWE-787 Out-of-bounds Write in The Document Foundation LibreOffice
Description
LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was allocated one element too small for that worst case, so such a formula wrote one element past its end. In fixed versions the array is sized to hold the largest possible nesting.
CVSS v4.0
Score 5.4medium
Affected software
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Document Fdn.
- Date Reserved
- 2026-05-11T18:55:27.138Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a303db60b89be6888695b28
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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