CVE-2026-34084

PhpSpreadsheet is a library for reading and writing spreadsheet files. In versions 1.30.2 and earlier, 2.0.0 through 2.1.14, 2.2.0 through 2.4.3, 3.3.0 through 3.10.3, and 4.0.0 through 5.5.0, when the filename argument to IOFactory::load is user-controlled, an attacker can supply a PHP stream...

PhpSpreadsheet 跨站脚本漏洞

PhpSpreadsheet is a PHP library developed by PHPOffice, designed for reading and writing spreadsheet files. PhpSpreadsheet has a cross-site scripting vulnerability. This vulnerability arises when the HTML Writer skips htmlspecialchars output escaping when using custom number formats that contain ...

PhpSpreadsheet 代码问题漏洞

PhpSpreadsheet is a PHP library developed by PHPOffice, designed for reading and writing spreadsheet files. Code vulnerabilities exist in versions 1.30.2 and earlier, as well as versions 2.0.0 to 2.1.14, 2.2.0 to 2.4.3, 3.3.0 to 3.10.3, and 4.0.0 to 5.5.0 of PhpSpreadsheet. These vulnerabilities...

CVE-2026-35453: Improper Neutralization of Input During Web Page Generation

PhpSpreadsheet is a library for reading and writing spreadsheet files. In versions 1.30.3 and earlier, 2.0.0 through 2.1.15, 2.2.0 through 2.4.4, 3.3.0 through 3.10.4, and 4.0.0 through 5.6.0, the HTML Writer skips htmlspecialchars output escaping when a cell uses a custom number format containin...

CVE-2026-34084: Deserialization of Untrusted Data

PhpSpreadsheet is a library for reading and writing spreadsheet files. In versions 1.30.2 and earlier, 2.0.0 through 2.1.14, 2.2.0 through 2.4.3, 3.3.0 through 3.10.3, and 4.0.0 through 5.5.0, when the filename argument to IOFactory::load is user-controlled, an attacker can supply a PHP stream...

Cross-site Scripting (XSS)

Overview phpoffice/phpspreadsheet is a Spreadsheet engine that Read, Create and Write Spreadsheet documents in PHP . Affected versions of this package are vulnerable to Cross-site Scripting XSS through the readRowAttributes process. An attacker can exhaust CPU and memory resources by submitting a...

GHSA-7C6M-4442-2X6M PhpSpreadsheet has CPU Denial of Service via Unbounded Row Number in XLSX Row Dimensions

Summary The XLSX reader's ColumnAndRowAttributes::readRowAttributes method reads row numbers from XML attributes without validating them against the spreadsheet maximum row limit AddressRange::MAXROW = 1,048,576. An attacker can craft a minimal XLSX file 1.6KB containing a element that inflates...

PhpSpreadsheet has CPU Denial of Service via Unbounded Row Index in SpreadsheetML XML Reader

Summary The SpreadsheetML XML reader Reader\Xml does not validate the ss:Index row attribute against the maximum allowed row count AddressRange::MAXROW = 1,048,576. An attacker can craft a SpreadsheetML XML file with ss:Index="999999999" on a element, which inflates the internal cachedHighestRow ...

Cross-site Scripting (XSS)

Overview phpoffice/phpspreadsheet is a Spreadsheet engine that Read, Create and Write Spreadsheet documents in PHP . Affected versions of this package are vulnerable to Cross-site Scripting XSS through the Reader\Xml process when processing SpreadsheetML XML files containing a crafted ss:Index...

GHSA-84WQ-86V6-X5J6 PhpSpreadsheet has CPU Denial of Service via Unbounded Row Index in SpreadsheetML XML Reader

Summary The SpreadsheetML XML reader Reader\Xml does not validate the ss:Index row attribute against the maximum allowed row count AddressRange::MAXROW = 1,048,576. An attacker can craft a SpreadsheetML XML file with ss:Index="999999999" on a element, which inflates the internal cachedHighestRow ...

PhpSpreadsheet has SSRF/RCE in IOFactory::load when $filename is user controlled

The usage of isfile, used to verify if the $filename is indeed an actual file, by all? Reader implementations inside the helper function File::assertFile is php-wrapper aware, for any php wrappers implementing stat. The 3 wrappers ftp://, phar:// and ssh2.sftp://, all satisfy this requirement - 2...

Server-side Request Forgery (SSRF)

Overview phpoffice/phpspreadsheet is a Spreadsheet engine that Read, Create and Write Spreadsheet documents in PHP . Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the IOFactory::load function. An attacker can execute arbitrary code or initiate unauthoriz...

GHSA-Q4Q6-R8WH-5CGH PhpSpreadsheet has SSRF/RCE in IOFactory::load when $filename is user controlled

The usage of isfile, used to verify if the $filename is indeed an actual file, by all? Reader implementations inside the helper function File::assertFile is php-wrapper aware, for any php wrappers implementing stat. The 3 wrappers ftp://, phar:// and ssh2.sftp://, all satisfy this requirement - 2...

PT-2026-37105

Name of the Vulnerable Software and Affected Versions PhpSpreadsheet versions prior to 1.30.4 PhpSpreadsheet versions prior to 2.1.16 PhpSpreadsheet versions prior to 2.4.5 PhpSpreadsheet versions prior to 3.10.5 PhpSpreadsheet versions prior to 5.7.0 Description The SpreadsheetML XML reader...

PT-2026-37107

Name of the Vulnerable Software and Affected Versions PhpSpreadsheet versions prior to 1.30.4 PhpSpreadsheet versions prior to 2.1.16 PhpSpreadsheet versions prior to 2.4.5 PhpSpreadsheet versions prior to 3.10.5 PhpSpreadsheet versions prior to 5.7.0 Description The XLSX reader's...

CVE-2026-40863

creationtimestamp| type| source ---|---|--- 2026-04-28 23:50:56+00:00| published-proof-of-concept| https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-84wq-86v6-x5j6...

CVE-2026-40902

creationtimestamp| type| source ---|---|--- 2026-04-28 23:49:04+00:00| published-proof-of-concept| https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-7c6m-4442-2x6m...

PhpSpreadsheet has XSS via number format code with @ text placeholder bypasses htmlspecialchars in HTML writer

It was discovered that there is a way to bypass HTML escaping in the HTML writer using custom number format codes. The Problem In Writer/Html.php around line 1592, the code checks if the formatted cell data equals the original data to decide whether to apply htmlspecialchars: php if $cellData ===...

GHSA-HRMW-QPRP-WGMC PhpSpreadsheet has XSS via number format code with @ text placeholder bypasses htmlspecialchars in HTML writer

It was discovered that there is a way to bypass HTML escaping in the HTML writer using custom number format codes. The Problem In Writer/Html.php around line 1592, the code checks if the formatted cell data equals the original data to decide whether to apply htmlspecialchars: php if $cellData ===...

Cross-site Scripting (XSS)

Overview phpoffice/phpspreadsheet is a Spreadsheet engine that Read, Create and Write Spreadsheet documents in PHP . Affected versions of this package are vulnerable to Cross-site Scripting XSS in the HTML generation process when a cell uses a custom number format containing the @ text placeholde...