The checkHTTP function in libraries/Config.class.php in phpMyAdmin 4.5.x before 4.5.5.1 does not verify X.509 certificates from api.github.com SSL servers, which allows man-in-the-middle attackers to spoof these servers and obtain sensitive information via a crafted certificate.

Multiple cross-site scripting (XSS) vulnerabilities in phpMyAdmin 4.4.x before 4.4.15.5 and 4.5.x before 4.5.5.1 allow remote authenticated users to inject arbitrary web script or HTML via (1) normalization.php or (2) js/normalization.js in the database normalization page, (3) templates/database/structure/sortable_header.phtml in the database structure page, or (4) the pos parameter to db_central_columns.php in the central columns page.

Multiple cross-site scripting (XSS) vulnerabilities in phpMyAdmin 4.0.x before 4.0.10.15, 4.4.x before 4.4.15.5, and 4.5.x before 4.5.5.1 allow remote attackers to inject arbitrary web script or HTML via (1) a crafted Host HTTP header, related to libraries/Config.class.php; (2) crafted JSON data, related to file_echo.php; (3) a crafted SQL query, related to js/functions.js; (4) the initial parameter to libraries/server_privileges.lib.php in the user accounts page; or (5) the it parameter to libraries/controllers/TableSearchController.class.php in the zoom search page.

Cross-site scripting (XSS) vulnerability in the format function in libraries/sql-parser/src/Utils/Error.php in the SQL parser in phpMyAdmin 4.5.x before 4.5.5.1 allows remote authenticated users to inject arbitrary web script or HTML via a crafted query.