The Simple Shopping Cart WordPress plugin before 5.3.3 does not verify submitted product prices against a value only the site owner can set, allowing users with the Contributor role and above to register attacker-chosen prices for existing products, which any visitor can then use to add those products to the cart at that price.

The Simple Shopping Cart WordPress plugin before 5.3.3 does not verify that a PayPal payment notification is for a payment received by the site owner's PayPal account in its default configuration, allowing unauthenticated attackers to have their orders marked as paid using a payment made to an account they control.

The Simple Membership plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'country' parameter in all versions up to, and including, 4.8.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Unauthenticated attackers may also exploit this vulnerability when the plugin's Enable Free Membership feature is turned on, as it permits anonymous front-end registration and profile submission.

Subscriber Bypass Vulnerability in All In One WP Security & Firewall <= 5.4.8 versions.

Unauthenticated Broken Access Control in WP Express Checkout (Accept PayPal Payments) <= 2.4.9 versions.

Unauthenticated Broken Access Control in Simple Membership <= 4.7.1 versions.

The All-In-One Security (AIOS) – Security and Firewall plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 5.4.7. This is due to insufficient input sanitization in the getrestroute() function and missing output escaping in the columndefault() method of the debug log list table. When the 'Disable REST API for non-logged in users' feature (aiowpsdisallowunauthorizedrestrequests) is enabled alongside debug logging (aiowpsenabledebug), an unauthenticated attacker can embed arbitrary HTML or JavaScript in the REST request path. The path is retrieved via urldecode($SERVER['REQUESTURI']), which decodes URL-encoded payloads into literal HTML characters. This decoded, unsanitized value is concatenated directly into a debug log message and stored in the database. When an administrator navigates to the AIOS Dashboard Debug Logs page, the columndefault() method returns the raw database value without escaping, and the parent list table echoes it directly, causing JavaScript execution in the administrator's browser session. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute when an administrator views the debug log page, enabling nonce theft, privileged AJAX/REST actions, and potential full site compromise.

Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in Tips and Tricks HQ WP eMember allows Retrieve Embedded Sensitive Data.

This issue affects WP eMember: from n/a through v10.2.2.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Tips and Tricks HQ WP eMember allows Reflected XSS.This issue affects WP eMember: from n/a through v10.2.2.

Improper Validation of Specified Quantity in Input vulnerability in Tips and Tricks HQ WP Express Checkout (Accept PayPal Payments) allows Manipulating Hidden Fields.This issue affects WP Express Checkout (Accept PayPal Payments): from n/a through 2.3.7.

Missing Authorization vulnerability in Tips and Tricks HQ Easy Accept Payments.This issue affects Easy Accept Payments: from n/a through 4.9.10.

Cross-site request forgery (CSRF) vulnerability in the All In One WP Security & Firewall plugin before 3.9.0 for WordPress allows remote attackers to hijack the authentication of administrators for requests that delete logs of 404 (aka Not Found) HTTP status codes.

SQL injection vulnerability in the All In One WP Security & Firewall plugin before 3.8.8 for WordPress allows remote attackers to execute arbitrary SQL commands via unspecified vectors.

Multiple SQL injection vulnerabilities in the All In One WP Security & Firewall plugin before 3.8.3 for WordPress allow remote authenticated users to execute arbitrary SQL commands via the (1) orderby or (2) order parameter in the aiowpsec page to wp-admin/admin.php. NOTE: this can be leveraged using CSRF to allow remote attackers to execute arbitrary SQL commands.