Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://github.com/PHPOffice/PhpSpreadsheet/commit/299993894dce37aa3b64aa23e9a3f
- https://github.com/PHPOffice/PhpSpreadsheet/commit/2de29384aa11223ee08136c0e6a9e
- https://github.com/PHPOffice/PhpSpreadsheet/commit/980b5c294493856f1a25754f1e8a1
- https://github.com/PHPOffice/PhpSpreadsheet/commit/9a0b48622ebfe93fa48cb9bc09ce5
- https://github.com/PHPOffice/PhpSpreadsheet/commit/da13f40e8760d599b0e8a296017d4
- https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.30.7
- https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.1.19
- https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.4.8
- https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/3.10.8
- https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/5.10.0
- https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-j2w7-387v-m
- https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-j2w7-387v-m
FAQ
What is CVE-2026-108359?
CVE-2026-108359 is a documented vulnerability. 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...
How severe is CVE-2026-108359?
CVSS scoring is not yet available for CVE-2026-108359. Check NVD for updates.
Is there a patch for CVE-2026-108359?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.