Directory traversal vulnerability in install.php in Piwigo before 2.4.7 allows remote attackers to read and delete arbitrary files via a .. (dot dot) in the dl parameter.
Multiple cross-site request forgery (CSRF) vulnerabilities in Piwigo before 2.6.2 allow remote attackers to hijack the authentication of administrators for requests that use the (1) pwg.groups.addUser, (2) pwg.groups.deleteUser, (3) pwg.groups.setInfo, (4) pwg.users.setInfo, (5) pwg.permissions.add, or (6) pwg.permissions.remove method.