XXE in PHPSpreadsheet due to encoding issue

HIGH 8.8CVE-2018-19277 · GHSA-xcrg-29h7-h4cj · Published 14/11/2018 · updated 17/06/2026

In short

CVE-2018-19277 is a HIGH (CVSS 8.8) vulnerability affecting phpoffice/phpexcel, phpoffice/phpspreadsheet, phpspreadsheet (phpoffice).
Chance of exploitation in the next 30 days (EPSS): 7.8%, higher than 94.7% of all vulnerabilities.
Fix: update to 1.8.2, 1.5.1 or later.

Package	Affected versions	Patched versions
phpoffice/phpexcel Packagist	`< 1.8.2`	`1.8.2`
phpoffice/phpspreadsheet Packagist	`< 1.5.1`	`1.5.1`
phpspreadsheet phpoffice	`≤ 1.5.0`	No fix yet

securityScan() in PHPOffice PhpSpreadsheet through 1.5.0 allows a bypass of protection mechanisms for XXE via UTF-7 encoding in a .xlsx file

NVD description

securityScan() in PHPOffice PhpSpreadsheet through 1.5.0 allows a bypass of protection mechanisms for XXE via UTF-7 encoding in a .xlsx file

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Package

Affected versions

Patched versions

Packagist

< 1.8.2

1.8.2

Packagist

< 1.5.1

1.5.1

≤ 1.5.0

No fix yet

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