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CVE-2026-108359

CVE-2026-108359 · PhpSpreadsheet ODS Reader: Unbounded number-rows-repeated → CPU & Memory Exhaustion (DoS)

This page contains facts from public vulnerability sources. Check the original advisory before updating.

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0, Ods::processTableRow in src/PhpSpreadsheet/Reader/Ods.php accepts an unbounded table:number-rows-repeated attribute from an ODS table row. When the row contains a value, the reader materializes a cell for every repetition without checking the spreadsheet row limit, so a small attacker-controlled ODS file can consume substantial CPU and memory and terminate the PHP worker. Column repetition is separately bounded and is not part of this vulnerability. This issue is fixed in versions 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0.

CVSS 8.7 · High · EPSS 0.4%

Published
Updated

Affected products and versions

  • phpspreadsheet

    Versions
    • < 1.30.7: Affected
    • >= 2.0.0, < 2.1.19: Affected
    • >= 2.2.0, < 2.4.8: Affected
    • >= 3.3.0, < 3.10.8: Affected
    • >= 4.0.0, < 5.10.0: Affected

    No fix published

Original sources

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