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XSS (Cross-Site Scripting)

Dangerous Bug in WP-Members Membership Plugin – Unauthenticated Stored Cross-Site Scripting Vulnerability <= 3.4.9.2

In the plugin installed on over 60,000 web sites (WP-Members Membership - a membership plugin with content restriction and custom registration) an Unauthenticated Stored Cross-Site Scripting (XSS) vulnerability has been reported recently. It is recommended that you update your sites immediately. In order to avoid web site crashes and to assure timely security updates it is best to use our WordPress Maintenance Service. WP-Members Membership Plugin <= 3.4.9.2 - Unauthenticated Stored Cross-Site Scripting vulnerability Plugin slug: wp-members Update to version: 3.4.9.3 The vulnerability...

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WordPress Core 6.0.3 Security Release

On October 17, 2022, the WordPress core team released WordPress version 6.0.3, which contains patches for a total of 16 vulnerabilities, including SQL injection, stored XSS, open redirect, data exposure and cross-site request forgery vulnerabilities. The good news is that most of these are low in severity or require a highly privileged user account or additional vulnerable code in order to exploit. Anyway because this is a security release, it is recommended that you update your sites immediately. All versions since WordPress 3.7 have also been updated. Note, that in order to avoid web site...

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WordPress Core 6.0.2 Security and Maintenance Release

On August 30, 2022, the WordPress core team released WordPress version 6.0.2, which contains patches for 3 vulnerabilities, including a High Severity SQLi vulnerability in the Links functionality as well as two Medium Severity Cross-Site Scripting vulnerabilities. Because this is a security release, it is recommended that you update your sites immediately. All versions since WordPress 3.7 have also been updated. Note, that in order to avoid web site crashes and to assure timely security updates it is best to use our WordPress Maintenance Service. WordPress <= 6.0.1 - Authenticated...

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Critical Vulnerability Patched in Ninja Forms WordPress Plugin <= 3.6.10

Recently information about two code injection vulnerabilities surfaced the web that made it possible for unauthenticated attackers to call a limited number of methods in various Ninja Forms classes, including a method that unserializes user-supplied content, resulting in Object Injection. This could allow attackers to execute arbitrary code or delete arbitrary files on sites where a separate POP chain was present. It is recommended that you update your sites immediately. In order to avoid web site crashes and to assure timely security updates it is best to use our WordPress Maintenance...

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Cross-Site Scripting Vulnerability in Download Manager Plugin <= 3.2.42

Download Manager is a file and document management plugin to help manage and control file downloads with various file download controls to restrict unauthorized file access. The plugin also provides a complete solution to sell digital products from WordPress sites, including checkout functionality to complete an order. One feature of the plugin is the ability to use a shortcode to embed files and other assets in a page or post. This function was found to be vulnerable to reflected Cross-Site Scripting. Without proper sanitization and escaping in place on user-supplied inputs, JavaScript can...

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WordPress 5.9.2 Security Update Fixes XSS and Prototype Pollution Vulnerabilities

On March 10, 2022, the WordPress core team released WordPress version 5.9.2, which contains security patches for a high-severity vulnerability as well as two medium-severity issues. The high-severity issue affects version 5.9.0 and 5.9.1 and allows contributor-level users and above to insert malicious JavaScript into WordPress posts. Because this is a security release, it is recommended that you update your sites immediately. Note, that in order to avoid web site crashes and to assure timely security updates it is best to use our WordPress Maintenance Service. WordPress < 5.9.2 -...

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What Is Cross-site Scripting (XSS)

Improper Neutralization of Input During Web Page Generation The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Cross-site scripting (XSS) vulnerabilities occur in specific conditions Untrusted data enters a web application, typically from a web request. The web application dynamically generates a web page that contains this untrusted data. During page generation, the application does not prevent the data from containing content that is executable by a web browser, such as...

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