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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 11
https://github.com/PHPOffice/PhpSpreadsheet/commit/299993894dce37aa3b64aa23e9a3…
security-advisories@github.com
https://github.com/PHPOffice/PhpSpreadsheet/commit/2de29384aa11223ee08136c0e6a9…
security-advisories@github.com
https://github.com/PHPOffice/PhpSpreadsheet/commit/980b5c294493856f1a25754f1e8a…
security-advisories@github.com
https://github.com/PHPOffice/PhpSpreadsheet/commit/9a0b48622ebfe93fa48cb9bc09ce…
security-advisories@github.com
https://github.com/PHPOffice/PhpSpreadsheet/commit/da13f40e8760d599b0e8a296017d…
security-advisories@github.com
https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.30.7
security-advisories@github.com
https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.1.19
security-advisories@github.com
https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.4.8
security-advisories@github.com
https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/3.10.8
security-advisories@github.com
https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/5.10.0
security-advisories@github.com
https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-j2w7-387v-…
security-advisories@github.com