CVE-2026-3478 HIGH

CVE-2026-3478: Content Syndication Toolkit <= 1.3 - Unauthenticated Server-Side Request Forgery via 'url' Parameter

Vendor Benmoody
Product Content Syndication Toolkit
Weakness CWE-918 · SSRF
Published March 21, 2026
Last update April 8, 2026
View on NVD All CVEs

CVSS base score

7.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

The Content Syndication Toolkit plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 1.3 via the redux_p AJAX action in the bundled ReduxFramework library. The plugin registers a proxy endpoint (wp_ajax_nopriv_redux_p) that is accessible to unauthenticated users. The proxy() method in the Redux_P class takes a URL directly from $_GET['url'] without any validation (the regex is set to /.*/ which matches all URLs) and passes it to wp_remote_request(), which does not have built-in SSRF protection like wp_safe_remote_request(). There is no authentication check, no nonce verification, and no URL restriction. The response from the requested URL is then returned to the attacker, making this a full-read SSRF. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application, which can be used to query and modify information from internal services, scan internal network ports, or interact with cloud metadata endpoints.

Explanation of Vulnerability in Simple Terms

02Summary

The Content Syndication Toolkit versions 1.3 and earlier contain a server-side request forgery vulnerability. An attacker can make the affected site send HTTP requests to internal or external systems on the attacker's behalf, potentially accessing restricted resources or services. No authentication is required, and the impact extends beyond the vulnerable component itself.

What an attacker can do

03Attacker Capabilities

Make the site send HTTP requests to internal systems or external URLs under the attacker's control.

Potential impact on your site

04Site Impact

Attackers can access internal services, read sensitive data, or interact with external systems using your site's network identity.

Conditions required to exploit

05Prerequisites

Network access to the site; no authentication or user interaction required.

Key dates

06Disclosure timeline

March 21, 2026 CVE published
April 8, 2026 Record updated