Is CVE-2026-4336 actively exploited?

No active exploitation of CVE-2026-4336 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4336 be exploited remotely?

Yes. CVE-2026-4336 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4336?

CVE-2026-4336 has a CVSS score of 6.4 (MEDIUM).

HOME VULNERABILITIESCVE-2026-4336

MEDIUM

CVE-2026-4336

CWE-79Published: April 9, 2026· Updated: Apr 13, 2026

6.4

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:13.0th

Official Description

The Ultimate FAQ Accordion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via FAQ content in all versions up to, and including, 2.4.7. This is due to the plugin calling html_entity_decode() on post_content during rendering in the set_display_variables() function (View.FAQ.class.php, line 746), which converts HTML entity-encoded payloads back into executable HTML, combined with insufficient output escaping in the faq-answer.php template where the decoded content is echoed without wp_kses_post() or any other sanitization. The ufaq custom post type is registered with 'show_in_rest' => true and defaults to 'post' capability_type, allowing Author-level users to create and publish FAQs via the REST API. An Author can submit entity-encoded malicious HTML (e.g., <img src=x onerror=alert()>) which bypasses WordPress's kses sanitization at save time (since kses sees entities as plain text, not tags), but is then decoded back into executable HTML by html_entity_decode() at render time. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in FAQ pages that will execute whenever a user accesses an injected FAQ, either directly or via the [ultimate-faqs] shortcode.

NVD Source

Technical Analysis

CVE-2026-4336 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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.