Is CVE-2026-3478 actively exploited?

No active exploitation of CVE-2026-3478 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3478 be exploited remotely?

Yes. CVE-2026-3478 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3478?

CVE-2026-3478 has a CVSS score of 7.2 (HIGH).

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HIGH

CVE-2026-3478

CWE-918Published: March 21, 2026· Updated: Mar 23, 2026

7.2

CVSS v3.1

EPSS:0.07%probability of exploitation in 30 daysPercentile:20.8th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-3478 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.