eZ Publish Kernel before 5.4.14.1, 6.x before 6.13.6.2, and 7.x before 7.5.6.2 and eZ Publish Legacy before 5.4.14.1, 2017 before 2017.12.7.2, and 2019 before 2019.03.4.2 allow remote attackers to execute arbitrary code by uploading PHP code, unless the vhost configuration permits only app.php execution.

An XSS issue was discovered in the Admin UI in eZ Platform 2.x. This affects ezplatform-admin-ui 1.3.x before 1.3.5 and 1.4.x before 1.4.4, and ezplatform-page-builder 1.1.x before 1.1.5 and 1.2.x before 1.2.4.

eZ Systems eZ Publish version 5.4.0 to 5.4.9, and 5.3.12 and older, is vulnerable to an XSS issue in the search module, resulting in a risk of attackers injecting scripts which may e.g. steal authentication credentials.