WP Fastest Cache <= 1.1.4 - Authenticated(Administrator+) Blind Server Side Request Forgery via check_url

Server-Side Request Forgery (SSRF)
CVE CVE-2023-1938
CVSS 6.5 (Medium)
Publicly Published May 2, 2023
Last Updated May 9, 2023
Researcher Erwan LR - WPScan


The WP Fastest Cache plugin for WordPress is vulnerable to Server-Side Request Forgery in versions up to, and including, 1.1.4 via the 'check_url' function. This can allow Authenticated attackers with Administrator-level permissions to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services. Note that the function is also vulnerable to Cross-Site Request Forgery but this is only an issue due to the Server-Side Request Forgery capability.



1 affected software package

Software Type Plugin
Software Slug wp-fastest-cache (view on wordpress.org)
Patched? Yes
Remediation Update to version 1.1.5, or a newer patched version
Affected Version
  • <= 1.1.4
Patched Version
  • 1.1.5

All the threat data shared in this database is powered by Wordfence Intelligence Enterprise.
Interested in integrating this data into your platform or network?
Contact us now to discuss API access to our Wordfence Intelligence Enterprise Data Feeds.

Inquire Now

Want to get notified of the latest vulnerabilities that may affect your WordPress site?
Install Wordfence on your site today to get notified immediately if your site is affected by a vulnerability that has been added to our database.

Get Wordfence

The Wordfence Intelligence WordPress vulnerability database is completely free to access and query via API. Please review the documentation on how to access and consume the vulnerability data via API.