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

Summary

CVE	CVE-2026-108359
State	PUBLISHED
Assigner	GitHub_M
Source Priority	CVE Program / NVD first with legacy fallback
Published	2026-10-22 18:17:26 UTC
Updated	2026-10-23 19:42:24 UTC
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.

Risk And Classification

Primary CVSS: v4.0 8.7 HIGH from [email protected]

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-400 | CWE-789 | CWE-400 CWE-400: Uncontrolled Resource Consumption | CWE-789 CWE-789: Memory Allocation with Excessive Size Value

Version	Source	Type	Score	Severity	Vector
4.0	[email protected]	Secondary	8.7	HIGH	`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/E:X/C...`
4.0	CNA	DECLARED	8.7	HIGH	`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`

CVSS v4.0 Breakdown

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

Confidentiality

None

Integrity

None

Availability

High

Sub Conf.

None

Sub Integrity

None

Sub Availability

None

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

Source	Vendor	Product	Version	Platforms
CNA	PHPOffice	PhpSpreadsheet	affected < 1.30.7	Not specified
CNA	PHPOffice	PhpSpreadsheet	affected >= 2.0.0, < 2.1.19	Not specified
CNA	PHPOffice	PhpSpreadsheet	affected >= 2.2.0, < 2.4.8	Not specified
CNA	PHPOffice	PhpSpreadsheet	affected >= 3.3.0, < 3.10.8	Not specified
CNA	PHPOffice	PhpSpreadsheet	affected >= 4.0.0, < 5.10.0	Not specified

References

Reference	Source	Link	Tags
github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.4.8	[email protected]	github.com
github.com/PHPOffice/PhpSpreadsheet/releases/tag/3.10.8	[email protected]	github.com
github.com/PHPOffice/PhpSpreadsheet/releases/tag/5.10.0	[email protected]	github.com
github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-j2w7-387v-m2rq	[email protected]	github.com
github.com/PHPOffice/PhpSpreadsheet/commit/2de29384aa11223ee08136c0e6a9e...	[email protected]	github.com
github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.1.19	[email protected]	github.com
github.com/PHPOffice/PhpSpreadsheet/commit/980b5c294493856f1a25754f1e8a1...	[email protected]	github.com
github.com/PHPOffice/PhpSpreadsheet/commit/299993894dce37aa3b64aa23e9a3f...	[email protected]	github.com
github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.30.7	[email protected]	github.com
github.com/PHPOffice/PhpSpreadsheet/commit/9a0b48622ebfe93fa48cb9bc09ce5...	[email protected]	github.com
github.com/PHPOffice/PhpSpreadsheet/commit/da13f40e8760d599b0e8a296017d4...	[email protected]	github.com
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.

There are currently no legacy QID mappings associated with this CVE.