Allocation of Resources Without Limits or Throttling Affecting phpoffice/phpspreadsheet package, versions >=4.0.0, <5.10.0>=3.3.0, <3.10.8>=2.2.0, <2.4.8>=2.0.0, <2.1.19<1.30.7
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published25 Oct 2026
- disclosed22 Oct 2026
- creditUnknown
Introduced: 22 Oct 2026
NewCVE-2026-108359 (opens in a new tab)How to fix?
Upgrade phpoffice/phpspreadsheet to version 5.10.0, 3.10.8, 2.4.8, 2.1.19, 1.30.7 or higher.
Overview
phpoffice/phpspreadsheet is a Spreadsheet engine that Read, Create and Write Spreadsheet documents in PHP .
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the ODS file reader in src/PhpSpreadsheet/Reader/Ods.php, where the table:number-rows-repeated and table:number-columns-repeated XML attributes are parsed without bounds checking. An attacker can supply an ODS file containing an extremely large repeat count in these attributes, causing unbounded memory allocation or processing time that crashes the application.