{"id":"CVE-2024-56410","aliases":["EUVD-2025-0050","GHSA-wv23-996v-q229"],"status":"published","title":"PhpSpreadsheet has Cross-Site Scripting (XSS) vulnerability in custom properties","description":"PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7 have a cross-site scripting (XSS) vulnerability in custom properties. The HTML page is generated without clearing custom properties. Versions 3.7.0, 2.3.5, 2.1.6, and 1.29.7 contain a patch for the issue.","severity":{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00337,"percentile":0.27432,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2025-01-03T17:17:52Z","modified":"2026-10-28T02:31:10Z","fixes":[{"ecosystem":"Packagist","package":"phpoffice/phpspreadsheet","fixed_in":["3.7.0","1.29.7","2.1.6","2.3.5"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"phpoffice/phpspreadsheet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.7.0"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"phpoffice/phpspreadsheet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.29.6"},{"fixed":"1.29.7"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"phpoffice/phpspreadsheet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"last_affected":"2.1.5"},{"fixed":"2.1.6"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"phpoffice/phpspreadsheet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.2.0"},{"last_affected":"2.3.4"},{"fixed":"2.3.5"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"phpoffice/phpexcel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.8.2"}]}]},{"source":"osv","ecosystem":"Packagist","package":"phpoffice/phpspreadsheet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.7.0"}]}],"versions":["3.3.0","3.4.0","3.5.0","3.6.0"]},{"source":"osv","ecosystem":"Packagist","package":"phpoffice/phpspreadsheet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.29.7"}]}],"versions":["1.0.0","1.0.0-beta","1.0.0-beta2","1.1.0","1.10.0","1.10.1","1.11.0","1.12.0","1.13.0","1.14.0","1.14.1","1.15.0","1.16.0","1.17.0","1.17.1","1.18.0","1.19.0","1.2.0","1.2.1","1.20.0","1.21.0","1.22.0","1.23.0","1.24.0","1.24.1","1.25.0","1.25.1","1.25.2","1.26.0","1.27.0","1.27.1","1.28.0","1.29.0","1.29.1","1.29.2","1.29.4","1.29.5","1.29.6","1.3.0","1.3.1","1.4.0","1.4.1","1.5.0","1.5.1","1.5.2","1.6.0","1.7.0","1.8.0","1.8.1","1.8.2","1.9.0"]},{"source":"osv","ecosystem":"Packagist","package":"phpoffice/phpspreadsheet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.1.6"}]}],"versions":["2.0.0","2.1.0","2.1.1","2.1.3","2.1.4","2.1.5"]},{"source":"osv","ecosystem":"Packagist","package":"phpoffice/phpspreadsheet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.2.0"},{"fixed":"2.3.5"}]}],"versions":["2.2.0","2.2.1","2.2.2","2.3.0","2.3.2","2.3.3","2.3.4"]},{"source":"osv","ecosystem":"Packagist","package":"phpoffice/phpexcel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.8.2"}]}],"versions":["1.7.9","1.7.9-rc1","1.8.0","1.8.0rc1","1.8.0rc2","1.8.0rc3","1.8.0rc4","1.8.1","1.8.2"]}],"products":[{"vendor":"phpoffice","product":"phpspreadsheet"}],"references":[{"url":"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-wv23-996v-q229","tags":["x_refsource_CONFIRM","exploit","Exploit","Vendor Advisory","advisory","web"]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/45052f88e04c735d56457a8ffcdc40b2635a028e","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56410","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-wv23-996v-q229"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56410.json","tags":["advisory"]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-56410","title":"PhpSpreadsheet has Cross-Site Scripting (XSS) vulnerability in custom properties","description":"PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7 have a cross-site scripting (XSS) vulnerability in custom properties. The HTML page is generated without clearing custom properties. Versions 3.7.0, 2.3.5, 2.1.6, and 1.29.7 contain a patch for the issue.","status":"published","published":"2025-01-03T17:17:52.596Z","modified":"2025-01-03T20:11:13.518Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:57.983942Z"}],"euvd":[{"id":"EUVD-2025-0050","description":"PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7 have a cross-site scripting (XSS) vulnerability in custom properties. The HTML page is generated without clearing custom properties. Versions 3.7.0, 2.3.5, 2.1.6, and 1.29.7 contain a patch for the issue.","status":"published","published":"2025-01-03T17:17:52Z","modified":"2025-01-03T20:11:13Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","level":"medium"}],"updated_at":"2026-11-03T00:04:26.497295Z"}],"ghsa":[{"id":"GHSA-wv23-996v-q229","title":"PhpSpreadsheet has a Cross-Site Scripting (XSS) vulnerability in custom properties","description":"# Cross-Site Scripting (XSS) vulnerability in custom properties\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: the HTML page is generated without clearing custom properties\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateMeta`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Cross-Site Scripting (XSS) vulnerability in custom properties in Phpspreadsheet.\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the response.\n\n*Listing 9. Source code on the server*\n\n```\n\u003c?php\n\nrequire __DIR__ . '/vendor/autoload.php';\n\n$inputFileName = './doc/Book1.xlsx';\n$spreadsheet = \\PhpOffice\\PhpSpreadsheet\\IOFactory::load($inputFileName);\n$writer = new \\PhpOffice\\PhpSpreadsheet\\Writer\\Html($spreadsheet);\nprint($writer-\u003egenerateHTMLAll());\n```\n\nAn attacker can embed a payload in a file property that will result in the execution of arbitrary JavaScript code.\nThe Excel file is unpacked and a custom property in the file is inserted into the `docProps/custom.xml` file.\n\n![fig17](https://github.com/user-attachments/assets/65453b48-bca5-4f5c-a683-315a7bb1ab1f)\n\n*Figure 17. Embedding the payload*\n\nAfter making the changes, a new archive with the xlsx extension was created. At the moment of converting the xlsx file into an HTML representation, a property is obtained that participates in the formation of a string without sanitization.\n\n![fig18](https://github.com/user-attachments/assets/e0f63bfb-d9e1-4c9d-a2a9-8a0a20406cdc)\n\n*Figure 18. Getting a custom property*\n\nWhen calling the static `generateMeta` method, you can see that the key of the custom property is displayed without sanitization.\n\n![fig19](https://github.com/user-attachments/assets/8c74e264-af68-4f62-8ac7-437e65884e86)\n\n*Figure 19. Getting a custom property*\n\nAs a result, when viewing the excel file as the HTML representation, arbitrary JavaScript code will be executed.\n\n\u003cimg width=\"356\" alt=\"fig20\" src=\"https://github.com/user-attachments/assets/a6ed21e3-685c-415c-b2dc-453bc0652bef\" /\u003e\n\n*Figure 20. Executing arbitrary JavaScript code*\n\n# Credit\nThis vulnerability was discovered by **Aleksey Solovev (Positive Technologies)**","status":"published","published":"2025-01-03T17:25:45Z","modified":"2025-03-06T18:18:13Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","level":"medium"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:38:34.185137Z"}],"nvd":[{"id":"CVE-2024-56410","description":"PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7 have a cross-site scripting (XSS) vulnerability in custom properties. The HTML page is generated without clearing custom properties. Versions 3.7.0, 2.3.5, 2.1.6, and 1.29.7 contain a patch for the issue.","status":"published","published":"2025-01-03T18:15:15.987Z","modified":"2026-06-17T08:12:09.397Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:10:41.489236Z"}],"osv":[{"id":"CVE-2024-56410","title":"PhpSpreadsheet has Cross-Site Scripting (XSS) vulnerability in custom properties","description":"PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7 have a cross-site scripting (XSS) vulnerability in custom properties. The HTML page is generated without clearing custom properties. Versions 3.7.0, 2.3.5, 2.1.6, and 1.29.7 contain a patch for the issue.","status":"published","published":"2025-01-03T17:17:52.596Z","modified":"2026-10-28T02:31:10.569510754Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:44.777182Z"},{"id":"GHSA-wv23-996v-q229","title":"PhpSpreadsheet has a Cross-Site Scripting (XSS) vulnerability in custom properties","description":"# Cross-Site Scripting (XSS) vulnerability in custom properties\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: the HTML page is generated without clearing custom properties\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateMeta`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Cross-Site Scripting (XSS) vulnerability in custom properties in Phpspreadsheet.\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the response.\n\n*Listing 9. Source code on the server*\n\n```\n\u003c?php\n\nrequire __DIR__ . '/vendor/autoload.php';\n\n$inputFileName = './doc/Book1.xlsx';\n$spreadsheet = \\PhpOffice\\PhpSpreadsheet\\IOFactory::load($inputFileName);\n$writer = new \\PhpOffice\\PhpSpreadsheet\\Writer\\Html($spreadsheet);\nprint($writer-\u003egenerateHTMLAll());\n```\n\nAn attacker can embed a payload in a file property that will result in the execution of arbitrary JavaScript code.\nThe Excel file is unpacked and a custom property in the file is inserted into the `docProps/custom.xml` file.\n\n![fig17](https://github.com/user-attachments/assets/65453b48-bca5-4f5c-a683-315a7bb1ab1f)\n\n*Figure 17. Embedding the payload*\n\nAfter making the changes, a new archive with the xlsx extension was created. At the moment of converting the xlsx file into an HTML representation, a property is obtained that participates in the formation of a string without sanitization.\n\n![fig18](https://github.com/user-attachments/assets/e0f63bfb-d9e1-4c9d-a2a9-8a0a20406cdc)\n\n*Figure 18. Getting a custom property*\n\nWhen calling the static `generateMeta` method, you can see that the key of the custom property is displayed without sanitization.\n\n![fig19](https://github.com/user-attachments/assets/8c74e264-af68-4f62-8ac7-437e65884e86)\n\n*Figure 19. Getting a custom property*\n\nAs a result, when viewing the excel file as the HTML representation, arbitrary JavaScript code will be executed.\n\n\u003cimg width=\"356\" alt=\"fig20\" src=\"https://github.com/user-attachments/assets/a6ed21e3-685c-415c-b2dc-453bc0652bef\" /\u003e\n\n*Figure 20. Executing arbitrary JavaScript code*\n\n# Credit\nThis vulnerability was discovered by **Aleksey Solovev (Positive Technologies)**","status":"published","published":"2025-01-03T17:25:45Z","modified":"2025-03-06T18:37:39.563941Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"},{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:59.131095Z"}]}}