Is CVE-2026-2433 actively exploited?

No active exploitation of CVE-2026-2433 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-2433 be exploited remotely?

Yes. CVE-2026-2433 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-2433?

CVE-2026-2433 has a CVSS score of 6.1 (MEDIUM).

HOME VULNERABILITIESCVE-2026-2433

MEDIUM

CVE-2026-2433

CWE-79Published: March 7, 2026· Updated: Mar 9, 2026

6.1

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.5th

Official Description

The RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging plugin for WordPress is vulnerable to DOM-Based Cross-Site Scripting via postMessage in all versions up to, and including, 5.0.11. This is due to the plugin's admin-shell.js registering a global message event listener without origin validation (missing event.origin check) and directly passing user-controlled URLs to window.open() without URL scheme validation. This makes it possible for unauthenticated attackers to execute arbitrary JavaScript in the context of an authenticated administrator's session by tricking them into visiting a malicious website that sends crafted postMessage payloads to the plugin's admin page.

NVD Source

Technical Analysis

CVE-2026-2433 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

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.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.