{"id":"CVE-2019-12331","aliases":["EUVD-2019-0763","GHSA-vvwv-h69m-wg6f"],"status":"published","title":"XXE in PHPSpreadsheet due to incomplete fix for previous encoding issue","description":"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 ‚\u003c!ENTITY‘ and thus allowing for an xml external entity processing (XXE) attack.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0135,"percentile":0.71694,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-611"],"published":"2019-11-07T14:03:43Z","modified":"2026-10-20T10:52:19Z","fixes":[{"ecosystem":"Packagist","package":"phpoffice/phpspreadsheet","fixed_in":["1.8.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"phpoffice/phpspreadsheet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.0"}]}]},{"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":"0"},{"fixed":"1.8.0"}]}],"versions":["1.0.0","1.0.0-beta","1.0.0-beta2","1.1.0","1.2.0","1.2.1","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"]},{"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/blob/master/CHANGELOG.md#180---2019-07-01","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://herolab.usd.de/security-advisories/usd-2019-0046/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-12331","tags":["advisory"]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.8.0","tags":["web"]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/pull/1041","tags":["web"]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/0e6238c69e863b58aeece61e48ea032696c6dccd","tags":["web"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/phpoffice/phpspreadsheet/CVE-2019-12331.yaml","tags":["web"]},{"url":"https://herolab.usd.de/security-advisories/usd-2019-0046","tags":["web"]},{"url":"https://github.com/advisories/GHSA-vvwv-h69m-wg6f"},{"url":"https://github.com/PHPOffice/PhpSpreadsheet","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2019-12331","description":"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 ‚\u003c!ENTITY‘ and thus allowing for an xml external entity processing (XXE) attack.","status":"published","published":"2019-11-07T14:03:43Z","modified":"2024-08-04T23:17:39.846Z","updated_at":"2026-11-02T14:20:23.697579Z"}],"euvd":[{"id":"EUVD-2019-0763","description":"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 ‚\u003c!ENTITY‘ and thus allowing for an xml external entity processing (XXE) attack.","status":"published","published":"2019-11-07T14:03:43Z","modified":"2024-08-04T23:17:39Z","updated_at":"2026-11-03T02:40:46.416719Z"}],"ghsa":[{"id":"GHSA-vvwv-h69m-wg6f","title":"XXE in PHPSpreadsheet due to incomplete fix for previous encoding issue","description":"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 ?\u003c!ENTITY? and thus allowing for an xml external entity processing (XXE) attack.","status":"published","published":"2019-11-20T01:39:57Z","modified":"2025-03-06T18:02:28Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:38:34.185137Z"}],"nvd":[{"id":"CVE-2019-12331","description":"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 ‚\u003c!ENTITY‘ and thus allowing for an xml external entity processing (XXE) attack.","status":"published","published":"2019-11-07T15:15:10.697Z","modified":"2026-06-17T02:14:27.083Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:05:35.052973Z"}],"osv":[{"id":"CVE-2019-12331","description":"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 ‚\u003c!ENTITY‘ and thus allowing for an xml external entity processing (XXE) attack.","status":"published","published":"2019-11-07T15:15:10.697Z","modified":"2026-10-20T10:52:19.711097689Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:10.718934Z"},{"id":"GHSA-vvwv-h69m-wg6f","title":"XXE in PHPSpreadsheet due to incomplete fix for previous encoding issue","description":"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 ?\u003c!ENTITY? and thus allowing for an xml external entity processing (XXE) attack.","status":"published","published":"2019-11-20T01:39:57Z","modified":"2025-03-06T18:09:31.120262Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T15:46:57.694388Z"}]}}