Home Cyber Security News Gutenberg Template Library Plugin Bugs Affected 1+ Million WordPress Sites

Gutenberg Template Library Plugin Bugs Affected 1+ Million WordPress Sites

by Abeerah Hashim
Gutenberg Template plugin bugs

Researchers spotted numerous security bugs in the Gutenberg Template Library & Redux Framework plugin that threatened over 1 million sites. Exploiting the vulnerabilities could allow an adversary access to sensitive site data and consequently install arbitrary plugins.

Gutenberg Template Library Plugin Bugs

Wordfence recently shared details about vulnerabilities in the Gutenberg Template Library & Redux Framework plugin.

It’s a useful WordPress plugin from Redux.io bearing a huge library of Gutenberg templates. The plugin currently boasts over 1 million active installations. That means the vulnerabilities potentially risked over a million WordPress sites.

As elaborated in their post, the first of these bugs (CVE-2021-38312) affected the REST API Endpoints of the Gutenberg Template Library plugin. The vulnerability existed since the endpoints only checked edit_posts capability with the user account.

While the REST API Endpoints registered under the redux/v1/templates/ REST Route used a permission_callback to verify a user’s permissions, this callback only checked whether or not the user sending the request had the edit_posts capability.

Hence, users with lower privileges could install block templates or even plugins from the WordPress repository via the redux/v1/templates/plugin-install endpoint. Besides, the user could also delete posts or pages on the website using redux/v1/templates/delete_saved_block endpoint.

The second vulnerability (CVE-2021-38314) existed as the plugin allowed an unauthenticated adversary to view sensitive site data.

This $support_hash AJAX action, which was also available to unauthenticated users, called the support_args function in redux-core/inc/classes/class-redux-helpers.php, which returned potentially sensitive information such as the PHP version, active plugins on the site and their versions, and an unsalted md5 hash of the site’s AUTH_KEY and SECURE_AUTH_KEY.

Developers Fixed The Bugs

Wordfence reached out to the plugin developers to report the bugs. Consequently, the vendors patched the bugs with the release of plugin version 4.2.13.

Nonetheless, the current plugin version is 4.2.14. Hence, all users should update their WordPress sites to this version to remain safe from potential cyber threats.

You may also like

Latest Hacking News

Privacy Preference Center


The __cfduid cookie is used to identify individual clients behind a shared IP address and apply security settings on a per-client basis.

cookie_notice_accepted and gdpr[allowed_cookies] are used to identify the choices made from the user regarding cookie consent.

For example, if a visitor is in a coffee shop where there may be several infected machines, but the specific visitor's machine is trusted (for example, because they completed a challenge within your Challenge Passage period), the cookie allows Cloudflare to identify that client and not challenge them again. It does not correspond to any user ID in your web application, and does not store any personally identifiable information.

__cfduid, cookie_notice_accepted, gdpr[allowed_cookies]


DoubleClick by Google refers to the DoubleClick Digital Marketing platform which is a separate division within Google. This is Google’s most advanced advertising tools set, which includes five interconnected platform components.

DoubleClick Campaign Manager: the ad-serving platform, called an Ad Server, that delivers ads to your customers and measures all online advertising, even across screens and channels.

DoubleClick Bid Manager – the programmatic bidding platform for bidding on high-quality ad inventory from more than 47 ad marketplaces including Google Display Network.

DoubleClick Ad Exchange: the world’s largest ad marketplace for purchasing display, video, mobile, Search and even Facebook inventory.

DoubleClick Search: is more powerful than AdWords and used for purchasing search ads across Google, Yahoo, and Bing.

DoubleClick Creative Solutions: for designing, delivering and measuring rich media (video) ads, interactive and expandable ads.



The _ga is asssociated with Google Universal Analytics - which is a significant update to Google's more commonly used analytics service. This cookie is used to distinguish unique users by assigning a randomly generated number as a client identifier. It is included in each page request in a site and used to calculate visitor, session and campaign data for the sites analytics reports. By default it is set to expire after 2 years, although this is customisable by website owners.

The _gat global object is used to create and retrieve tracker objects, from which all other methods are invoked. Therefore the methods in this list should be run only off a tracker object created using the _gat global variable. All other methods should be called using the _gaq global object for asynchronous tracking.

_gid works as a user navigates between web pages, they can use the gtag.js tagging library to record information about the page the user has seen (for example, the page's URL) in Google Analytics. The gtag.js tagging library uses HTTP Cookies to "remember" the user's previous interactions with the web pages.

_ga, _gat, _gid