CVE-2026-4246 ElementsKit Pro <= 4.10.1 - Unauthenticated Stored Cross-Site Scripting via 's' Parameter

Q: What is CVE-2026-4246?

CVE-2026-4246 is a medium-severity cross-site scripting vulnerability in wpmet ElementsKit Pro, published on 28 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Q: Is CVE-2026-4246 being exploited?

There is no known exploitation of CVE-2026-4246 in the wild and no public exploit code.

Q: How do I fix CVE-2026-4246?

No fix has been published for CVE-2026-4246 yet. Limit exposure of the affected software until one is available.

Medium 6.1 Published 28 Aug 2026 Updated 28 Aug 2026

Unauthenticated attackers can inject arbitrary scripts via the Advanced Search REST endpoint, leading to stored XSS when users view popular keywords.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-4246?

CVE-2026-4246 is a medium-severity cross-site scripting vulnerability in wpmet ElementsKit Pro, published on 28 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The ElementsKit Pro plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 's' parameter of the Advanced Search REST endpoint in all versions up to, and including, 4.10.1 due to insufficient input sanitization and output escaping. The REST endpoint at /wp-json/elementskit/v1/advanced-search uses permission_callback set to __return_true, allowing unauthenticated access. Search terms are stored in the ekit_advanced_search_popular_keyword WordPress option via update_option(). While sanitize_text_field() is applied, it does not encode double quotes, and the stored keywords are rendered in HTML attributes via sprintf without esc_attr(), allowing attribute injection. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user triggers the "no results" popular keywords view on pages using the Advanced Search widget.

Weakness: CWE-79

Which versions are affected by CVE-2026-4246?

How do I fix CVE-2026-4246?

No fix has been published for CVE-2026-4246 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-4246 being exploited?