The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'skin' attribute of the learnpresscourses shortcode in all versions up to and including 4.3.3. This is due to insufficient input sanitization and output escaping on the 'skin' shortcode attribute. The attribute value is used directly in an sprintf() call that generates HTML (class attribute and data-layout attribute) without any escattr() escaping. 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 LearnPress – WordPress LMS Plugin for Create and Sell Online Courses plugin for WordPress is vulnerable to payment bypass through user-controlled key in all versions up to, and including, 4.3.5. This is due to improper handling of user-supplied request parameters in the REST API endpoint, which passes the unsanitized parameter array to the addtocart() function where arraymerge() allows attacker-controlled values to overwrite hardcoded defaults. This makes it possible for authenticated attackers, with subscriber-level access and above, to enroll in any paid course entirely free of charge by supplying a quantity value of zero, which causes the order total to calculate as $0 and bypasses all payment gateway requirements.

URL Redirection to Untrusted Site ('Open Redirect') vulnerability in ThimPress LearnPress learnpress.This issue affects LearnPress: from n/a through <= 4.2.7.1.

Missing Authorization vulnerability in ThimPress LearnPress allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects LearnPress: from n/a through 4.2.7.5.

Authorization Bypass Through User-Controlled Key vulnerability in ThimPress LearnPress allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects LearnPress: from n/a through 4.2.6.8.2.

The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to unauthorized deletion of quiz question answers due to a missing capability check in the deletequestionanswer() function of the EditQuestionAjax class in all versions up to, and including, 4.3.2.8. The AbstractAjax::catchlpajax() dispatcher verifies a wprest nonce but performs no currentusercan() check, and the QuestionAnswerModel::delete() method only validates minimum answer counts without checking user capabilities. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete answer options from any quiz question on the site.

The LearnPress plugin for WordPress is vulnerable to unauthorized data deletion due to a missing capability check on the deletequestionanswer() function in all versions up to, and including, 4.3.2.8. The plugin exposes a wprest nonce in public frontend HTML (lpData) to unauthenticated visitors, and uses that nonce as the only security gate for the lp-load-ajax AJAX dispatcher. The deletequestionanswer action has no capability or ownership check. This makes it possible for unauthenticated attackers to delete any quiz answer option by sending a crafted POST request with a publicly available nonce.

The LearnPress WordPress plugin before 4.2.7.5.1 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup).

The LearnPress WordPress plugin before 4.2.7.5.1 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup).

The LearnPress WordPress plugin before 4.2.7.2 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup).

The LearnPress WordPress plugin before 4.2.7.2 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup).

The LearnPress WordPress plugin before 4.1.7.2 unserialises user input in a REST API endpoint available to unauthenticated users, which could lead to PHP Object Injection when a suitable gadget is present, leadint to remote code execution (RCE). To successfully exploit this vulnerability attackers must have knowledge of the site secrets, allowing them to generate a valid hash via the wphash() function.

The LearnPress WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient escaping on the $customprofile parameter found in the ~/inc/admin/views/backend-user-profile.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 4.1.3.1. This affects multi-site installations where unfilteredhtml is disabled for administrators, and sites where unfilteredhtml is disabled. Please note that this is seperate from CVE-2021-24702.

The LearnPress WordPress plugin before 4.2.5.5 does not sanitise and escape user input before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin.

Cross-site scripting vulnerability in LearnPress prior to version 3.1.0 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

SQL injection vulnerability in the LearnPress prior to version 3.1.0 allows attacker with administrator rights to execute arbitrary SQL commands via unspecified vectors.

Open redirect vulnerability in LearnPress prior to version 3.1.0 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via unspecified vectors.

The LearnPress plugin before 3.2.6.9 for WordPress allows remote attackers to escalate the privileges of any user to LP Instructor via the accept-to-be-teacher action parameter.

LearnPress Wordpress plugin version prior and including 3.2.6.7 is vulnerable to SQL Injection

The LearnPress WordPress plugin before 4.1.4 does not sanitise, validate and escape the id parameter before using it in SQL statements when duplicating course/lesson/quiz/question, leading to SQL Injections issues

The LearnPress WordPress plugin before 4.1.3.1 does not properly sanitize or escape various inputs within course settings, which could allow high privilege users to perform Cross-Site Scripting attacks when the unfiltredhtml capability is disallowed

The LearnPress WordPress plugin before 4.1.6 does not sanitise and escape the lp-dismiss-notice before outputting it back via the lpbackgroundsingleemail AJAX action, leading to a Reflected Cross-Site Scripting

Users of the LearnPress WordPress plugin before 4.1.5 can upload an image as a profile avatar after the registration. After this process the user crops and saves the image. Then a "POST" request that contains user supplied name of the image is sent to the server for renaming and cropping of the image. As a result of this request, the name of the user-supplied image is changed with a MD5 value. This process can be conducted only when type of the image is JPG or PNG. An attacker can use this vulnerability in order to rename an arbitrary image file. By doing this, they could destroy the design of the web site.