High 8.7Published Oct 22, 2026

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

Updated under an hour ago (Oct 27, 2026, 5:00 PM ET)

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It affects PHPOffice PhpSpreadsheet. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.41%, higher than 35% of scored CVEs.

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Every CVE for PHPOffice PhpSpreadsheet

Exploited in the last 30 days

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 (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-400, CWE-789
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.41% (percentile 35)
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Oct 22, 2026
First seen by InfoSec Signals: Oct 22, 2026

Affected products

Affected products

PHPOffice PhpSpreadsheet phpoffice:phpspreadsheet (from the name)	before 1.30.7; from 2.0.0, < 2.1.19; from 2.2.0, < 2.4.8; from 3.3.0, < 3.10.8; from 4.0.0, < 5.10.0	CNA record

References

References

https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-j2w7-387v-m2rq	x-refsource-confirm
https://github.com/PHPOffice/PhpSpreadsheet/commit/299993894dce37aa3b64aa23e9a3f4bb77ab0e66	x-refsource-misc
https://github.com/PHPOffice/PhpSpreadsheet/commit/2de29384aa11223ee08136c0e6a9e9981bc1a2eb	x-refsource-misc
https://github.com/PHPOffice/PhpSpreadsheet/commit/980b5c294493856f1a25754f1e8a1d2185b93738	x-refsource-misc
https://github.com/PHPOffice/PhpSpreadsheet/commit/9a0b48622ebfe93fa48cb9bc09ce57303bb07af9	x-refsource-misc
https://github.com/PHPOffice/PhpSpreadsheet/commit/da13f40e8760d599b0e8a296017d4b028b20e86c	x-refsource-misc
https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.30.7	x-refsource-misc
https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.1.19	x-refsource-misc
https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.4.8	x-refsource-misc
https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/3.10.8	x-refsource-misc
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.