References to Advisories, Solutions, and Tools

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Change History

PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. The `XmlScanner` class has a scan method which should prevent XXE attacks. However, in a bypass of the previously reported `CVE-2024-47873`, the regexes from the `findCharSet` method, which is used for determining the current encoding can be bypassed by using a payload in the encoding UTF-7, and adding at end of the file a comment with the value `encoding="UTF-8"` with `"`, which is matched by the first regex, so that `en

GitHub, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

GitHub, Inc. CWE-611

GitHub, Inc. https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php [No types assigned]

GitHub, Inc. https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-7cc9-j4mv-vcjp [No types assigned]

GitHub, Inc. https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_Processing [No types assigned]