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CVSS: 8.8EPSS: 0%CPEs: 1EXPL: 0

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Affected versions are subject to a bypassing of a filter which allows for an XXE-attack. This in turn allows attacker to obtain contents of local files, even if error reporting is muted. This vulnerability has been addressed in release version 2.2.1. All users are advised to upgrade. • https://github.com/PHPOffice/PhpSpreadsheet/commit/bea2d4b30f24bcc8a7712e208d1359e603b45dda https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-ghg6-32f9-2jp7 • CWE-611: Improper Restriction of XML External Entity Reference •

CVSS: 7.1EPSS: 0%CPEs: 1EXPL: 1

This affects the package phpoffice/phpspreadsheet from 0.0.0. The library is vulnerable to XSS when creating an html output from an excel file by adding a comment on any cell. The root cause of this issue is within the HTML writer where user comments are concatenated as part of link and this is returned as HTML. A fix for this issue is available on commit 0ed5b800be2136bcb8fa9c1bdf59abc957a98845/master branch. Esto afecta al paquete phpoffice/phpspreadsheet desde la versión 0.0.0. • https://github.com/PHPOffice/PhpSpreadsheet/blob/master/src/PhpSpreadsheet/Writer/Html.php%23L1792 https://github.com/PHPOffice/PhpSpreadsheet/commit/0ed5b800be2136bcb8fa9c1bdf59abc957a98845 https://snyk.io/vuln/SNYK-PHP-PHPOFFICEPHPSPREADSHEET-1048856 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVSS: 8.8EPSS: 0%CPEs: 1EXPL: 1

PHPOffice PhpSpreadsheet before 1.8.0 has an XXE issue. The XmlScanner decodes the sheet1.xml from an .xlsx to utf-8 if something else than UTF-8 is declared in the header. This was a security measurement to prevent CVE-2018-19277 but the fix is not sufficient. By double-encoding the the xml payload to utf-7 it is possible to bypass the check for the string ‚<!ENTITY‘ and thus allowing for an xml external entity processing (XXE) attack. • https://github.com/PHPOffice/PhpSpreadsheet/blob/master/CHANGELOG.md#180---2019-07-01 https://herolab.usd.de/security-advisories/usd-2019-0046 • CWE-611: Improper Restriction of XML External Entity Reference •

CVSS: 8.8EPSS: 2%CPEs: 1EXPL: 2

securityScan() in PHPOffice PhpSpreadsheet through 1.5.0 allows a bypass of protection mechanisms for XXE via UTF-7 encoding in a .xlsx file securityScan() en PHPOffice PhpSpreadsheet hasta la versión 1.5.0 permite la omisión de los mecanismos de protección de XEE (XML External Entity) mediante el cifrado UTF-7 en un archivo .xlsx. • https://www.exploit-db.com/exploits/46050 https://github.com/MewesK/TwigSpreadsheetBundle/issues/18 https://github.com/PHPOffice/PhpSpreadsheet/issues/771 https://www.bishopfox.com/news/2018/11/phpoffice-versions https://www.drupal.org/sa-contrib-2021-043 • CWE-91: XML Injection (aka Blind XPath Injection) •