Popup Builder WordPress plugin versions up to 4.4.5 suffer from an authorization bypass vulnerability. This flaw allows unauthenticated attackers to trash all published popups on a site via a single crafted GET request. The issue is worsened by a secondary flaw in the plugin's SGPopup::find() function, which causes all published popups to be targeted simultaneously when a specific parameter is present.
The Instant Popup Builder plugin for WordPress is vulnerable to Unauthenticated Arbitrary Shortcode Execution in all versions up to and including 1.1.7. This is due to the handle_email_verification_page() function constructing a shortcode string from user-supplied GET parameters (token, email) and passing it to do_shortcode() without properly sanitizing square bracket characters, combined with missing authorization checks on the init hook. While sanitize_text_field() and esc_attr() are applied, neither function strips or escapes square bracket characters ([ and ]). WordPress's shortcode regex uses [^\]\/]* to match content inside shortcode tags, meaning a ] character in the token value prematurely closes the shortcode tag. This makes it possible for unauthenticated attackers to inject and execute arbitrary registered shortcodes by crafting a malicious token parameter containing ] followed by arbitrary shortcode syntax.
The Popup Builder – Create highly converting, mobile friendly marketing popups.plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.4.2. This is due to the plugin generating predictable unsubscribe tokens using deterministic data. This makes it possible for unauthenticated attackers to unsubscribe arbitrary subscribers from mailing lists via brute-forcing the unsubscribe token, granted they know the victim's email address
The Popup Builder – Create highly converting, mobile friendly marketing popups.plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'sg_popup' shortcode in all versions up to, and including, 4.4.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
The Popup Builder plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 4.3.6 via the Subscribers Import feature. This makes it possible for unauthenticated attackers to extract sensitive data after an administrator has imported subscribers via a CSV file. This data may include the first name, last name, e-mail address, and potentially other personally identifiable information of subscribers.
The Pop ups, Exit intent popups, email popups, banners, bars, countdowns and cart savers – Promolayer plugin for WordPress is vulnerable to unauthorized plugin settings update due to a missing capability check on the disconnect_promolayer function in all versions up to, and including, 1.1.0. This makes it possible for authenticated attackers, with subscriber access or higher, to remove the Promolayer connection.
The Popup Builder plugin for WordPress is vulnerable to unauthorized modification of data and loss of data due to a missing capability check on all AJAX actions. This makes it possible for authenticated attackers, with subscriber-level access and above, to perform multiple unauthorized actions, such as deleting subscribers, and importing subscribers to conduct stored cross-site scripting attacks.
The Popup Builder – Create highly converting, mobile friendly marketing popups.plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the custom JS functionality in all versions up to, and including, 4.2.7 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.