CVE-2024-45292

PHPSpreadsheet’s HTML writer (PhpOffice\PhpSpreadsheet\Writer\Html) is affected by a Cross-Site Scripting (XSS) vulnerability due to insufficient sanitization of javascript: URLs in href attributes. The issue is fixed in releases 1.29.2, 2.1.1, and 2.3.0; upgrading to one of these versions (or n...

CVE-2024-45292 PhpSpreadsheet HTML writer is vulnerable to Cross-Site Scripting via JavaScript hyperlinks

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. \PhpOffice\PhpSpreadsheet\Writer\Html does not sanitize "javascript:" URLs from hyperlink href attributes, resulting in a Cross-Site Scripting vulnerability. This issue has been addressed in release versions 1.29.2,...

CVE-2024-45292 PhpSpreadsheet HTML writer is vulnerable to Cross-Site Scripting via JavaScript hyperlinks

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. \PhpOffice\PhpSpreadsheet\Writer\Html does not sanitize "javascript:" URLs from hyperlink href attributes, resulting in a Cross-Site Scripting vulnerability. This issue has been addressed in release versions 1.29.2,...

CVE-2024-45292 PhpSpreadsheet HTML writer is vulnerable to Cross-Site Scripting via JavaScript hyperlinks

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. \PhpOffice\PhpSpreadsheet\Writer\Html does not sanitize "javascript:" URLs from hyperlink href attributes, resulting in a Cross-Site Scripting vulnerability. This issue has been addressed in release versions 1.29.2,...

CVE-2024-45293

CVE-2024-45293 involves an XXE in PHPSpreadsheet’s XLSX reader where the security scanner that prevents XXE can be bypassed by whitespace in the XML encoding attribute, allowing a crafted XLSX to disclose server data. The root cause is a flawed XML encoding check in XmlScanner.php that defaults t...

CVE-2024-45293 XML External Entity Reference (XXE) in PHPSpreadsheet's XLSX reader

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The security scanner responsible for preventing XXE attacks in the XLSX reader can be bypassed by slightly modifying the XML structure, utilizing white-spaces. On servers that allow users to upload their own Excel XLS...

CVE-2024-45293 XML External Entity Reference (XXE) in PHPSpreadsheet's XLSX reader

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The security scanner responsible for preventing XXE attacks in the XLSX reader can be bypassed by slightly modifying the XML structure, utilizing white-spaces. On servers that allow users to upload their own Excel XLS...

CVE-2024-45293 XML External Entity Reference (XXE) in PHPSpreadsheet's XLSX reader

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The security scanner responsible for preventing XXE attacks in the XLSX reader can be bypassed by slightly modifying the XML structure, utilizing white-spaces. On servers that allow users to upload their own Excel XLS...

XML External Entity (XXE) Injection

Overview phpoffice/phpspreadsheet is a Spreadsheet engine that Read, Create and Write Spreadsheet documents in PHP . Affected versions of this package are vulnerable to XML External Entity XXE Injection through the toUtf8 function in the XmlScanner.php file. An attacker can disclose server files...

GHSA-6HWR-6V2F-3M88 XXE in PHPSpreadsheet's XLSX reader

Summary The security scanner responsible for preventing XXE attacks in the XLSX reader can be bypassed by slightly modifying the XML structure, utilizing white-spaces. On servers that allow users to upload their own Excel XLSX sheets, Server files and sensitive information can be disclosed by...

XXE in PHPSpreadsheet's XLSX reader

Summary The security scanner responsible for preventing XXE attacks in the XLSX reader can be bypassed by slightly modifying the XML structure, utilizing white-spaces. On servers that allow users to upload their own Excel XLSX sheets, Server files and sensitive information can be disclosed by...

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 via the href attributes in hyperlinks due to improper sanitization of "javascript:" URLs. An attacker c...

GHSA-R8W8-74WW-J4WH PhpSpreadsheet HTML writer is vulnerable to Cross-Site Scripting via JavaScript hyperlinks

Summary \PhpOffice\PhpSpreadsheet\Writer\Html does not sanitize "javascript:" URLs from hyperlink href attributes, resulting in a Cross-Site Scripting vulnerability. PoC Example target script: loadDIR . '/book.xlsx'; $writer = new \PhpOffice\PhpSpreadsheet\Writer\Html$spreadsheet;...

PhpSpreadsheet HTML writer is vulnerable to Cross-Site Scripting via JavaScript hyperlinks

Summary \PhpOffice\PhpSpreadsheet\Writer\Html does not sanitize "javascript:" URLs from hyperlink href attributes, resulting in a Cross-Site Scripting vulnerability. PoC Example target script: loadDIR . '/book.xlsx'; $writer = new \PhpOffice\PhpSpreadsheet\Writer\Html$spreadsheet;...

Absolute Path Traversal

Overview phpoffice/phpspreadsheet is a Spreadsheet engine that Read, Create and Write Spreadsheet documents in PHP . Affected versions of this package are vulnerable to Absolute Path Traversal via the HTML writer process when embedding images. An attacker can read arbitrary files on the server an...

PhpSpreadsheet allows absolute path traversal and Server-Side Request Forgery in HTML writer when embedding images is enabled

Summary It's possible for an attacker to construct an XLSX file that links images from arbitrary paths. When embedding images has been enabled in HTML writer with $writer-setEmbedImagestrue; those files will be included in the output as data: URLs, regardless of the file's type. Also URLs can be...

Absolute Path Traversal

Overview phpoffice/phpspreadsheet is a Spreadsheet engine that Read, Create and Write Spreadsheet documents in PHP . Affected versions of this package are vulnerable to Absolute Path Traversal via the setPath method. An attacker can access or leak sensitive information by constructing a malicious...

GHSA-5GPR-W2P5-6M37 PhpSpreadsheet allows absolute path traversal and Server-Side Request Forgery when opening XLSX file

Summary It's possible for an attacker to construct an XLSX file which links media from external URLs. When opening the XLSX file, PhpSpreadsheet retrieves the image size and type by reading the file contents, if the provided path is a URL. By using specially crafted php://filter URLs an attacker...

PhpSpreadsheet allows absolute path traversal and Server-Side Request Forgery when opening XLSX file

Summary It's possible for an attacker to construct an XLSX file which links media from external URLs. When opening the XLSX file, PhpSpreadsheet retrieves the image size and type by reading the file contents, if the provided path is a URL. By using specially crafted php://filter URLs an attacker...

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 discriminantFormula and r1Formula processes due to improper user input sanitization. An...