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.



Vulnerability Details for WP Fastest Cache

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

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