libraries/plugins/auth/AuthenticationCookie.class.php in phpMyAdmin 4.3.x before 4.3.13.2 and 4.4.x before 4.4.14.1 allows remote attackers to bypass a multiple-reCaptcha protection mechanism against brute-force credential guessing by providing a correct response to a single reCaptcha.

Multiple cross-site request forgery (CSRF) vulnerabilities in the setup process in phpMyAdmin 4.0.x before 4.0.10.10, 4.2.x before 4.2.13.3, 4.3.x before 4.3.13.1, and 4.4.x before 4.4.6.1 allow remote attackers to hijack the authentication of administrators for requests that modify the configuration file.

libraries/Config.class.php in phpMyAdmin 4.0.x before 4.0.10.10, 4.2.x before 4.2.13.3, 4.3.x before 4.3.13.1, and 4.4.x before 4.4.6.1 disables X.509 certificate verification for GitHub API calls over SSL, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

libraries/select_lang.lib.php in phpMyAdmin 4.0.x before 4.0.10.9, 4.2.x before 4.2.13.2, and 4.3.x before 4.3.11.1 includes invalid language values in unknown-language error responses that contain a CSRF token and may be sent with HTTP compression, which makes it easier for remote attackers to conduct a BREACH attack and determine this token via a series of crafted requests.