Piwigo through 2.9.1 allows remote attackers to obtain sensitive information about the descriptive name of a permalink by examining the redirect URL that is returned in a request for the permalink ID number of a private album. The permalink ID numbers are easily guessed.

Cross-site scripting (XSS) vulnerability in Piwigo 2.9.1 allows remote authenticated administrators to inject arbitrary web script or HTML via the virtual_name parameter to /admin.php (i.e., creating a virtual album).

An open redirect vulnerability is present in Piwigo 2.9 and probably prior versions, allowing remote attackers to redirect users to arbitrary web sites and conduct phishing attacks. The identification.php component is affected by this issue: the "redirect" parameter is not validated.

The application Piwigo is affected by a SQL injection vulnerability in version 2.9.0 and possibly prior. This vulnerability allows remote authenticated attackers to obtain information in the context of the user used by the application to retrieve data from the database. The user_list_backend.php component is affected: values of the iDisplayStart & iDisplayLength parameters are not sanitized; these are used to construct a SQL query and retrieve a list of registered users into the application.

Cross-site scripting (XSS) vulnerability in admin.php in Piwigo 2.9.0 and earlier allows remote attackers to inject arbitrary web script or HTML via the page parameter.

Cross-site scripting (XSS) vulnerability in the image upload function in Piwigo before 2.8.6 allows remote attackers to inject arbitrary web script or HTML via a crafted image filename.

admin/plugin.php in Piwigo through 2.8.3 doesn't validate the sections variable while using it to include files. This can cause information disclosure and code execution if it contains a .. sequence.

admin/batch_manager.php in Piwigo through 2.8.3 allows remote authenticated administrators to conduct File Inclusion attacks via the $page['tab'] variable (aka the mode parameter).

Cross-site scripting (XSS) vulnerability in admin/plugin.php in Piwigo through 2.8.3 allows remote attackers to inject arbitrary web script or HTML via a crafted filename that is mishandled in a certain error case.

admin/languages.php in Piwigo through 2.8.3 allows remote authenticated administrators to conduct File Inclusion attacks via the tab parameter.