{"id":"CVE-2024-45292","aliases":["GHSA-r8w8-74ww-j4wh"],"url":"https://o3.security/vulnerability/CVE-2024-45292","summary":"PhpSpreadsheet HTML writer is vulnerable to Cross-Site Scripting via JavaScript hyperlinks","details":"### Summary\n`\\PhpOffice\\PhpSpreadsheet\\Writer\\Html` does not sanitize \"javascript:\" URLs from hyperlink `href` attributes, resulting in a Cross-Site Scripting vulnerability.\n\n### PoC\n\nExample target script:\n\n```\n<?php\n\nrequire 'vendor/autoload.php';\n\n$reader = \\PhpOffice\\PhpSpreadsheet\\IOFactory::createReader(\"Xlsx\");\n$spreadsheet = $reader->load(__DIR__ . '/book.xlsx');\n\n$writer = new \\PhpOffice\\PhpSpreadsheet\\Writer\\Html($spreadsheet);\nprint($writer->generateHTMLAll());\n```\n\nSave this file in the same directory:\n[book.xlsx](https://github.com/PHPOffice/PhpSpreadsheet/files/15099763/book.xlsx)\n\nOpen index.php in a web browser and click on both links. The first demonstrates the vulnerability in a regular hyperlink and the second in a HYPERLINK() formula.","published":"2024-10-07T20:06:13.595Z","modified":"2026-08-12T03:51:37.218294602Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"phpoffice/phpspreadsheet","fixedVersion":"2.3.0"},{"ecosystem":"Packagist","name":"phpoffice/phpspreadsheet","fixedVersion":"1.29.2"},{"ecosystem":"Packagist","name":"phpoffice/phpspreadsheet","fixedVersion":"2.1.1"},{"ecosystem":"Packagist","name":"phpoffice/phpexcel","fixedVersion":null}],"fix":{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/392dd08c5569b623060784e1333454d64df1f03d","label":"PHPOffice/PhpSpreadsheet@392dd08"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/45xxx/CVE-2024-45292.json"},{"type":"ADVISORY","url":"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-r8w8-74ww-j4wh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-45292"},{"type":"WEB","url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/392dd08c5569b623060784e1333454d64df1f03d"},{"type":"WEB","url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/8b9b378ecdc603234a34aab3b293d2cdc8e9210e"},{"type":"WEB","url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/f0b70ed1086348904b27772b264e1605ba6c1d6d"},{"type":"PACKAGE","url":"https://github.com/PHPOffice/PhpSpreadsheet"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:37.218294602Z"}}