CVE Catalog

CVE-2026-18400

MediumCVSS 6.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.25%

17th percentile - higher than 17% of all known CVEs

Summary

The Slider, Gallery, and Carousel by MetaSlider plugin for WordPress up to version 3.111.0 is vulnerable to Stored Cross-Site Scripting via the 'delay' Post Meta Setting due to insufficient input sanitization and output escaping. Authenticated attackers with custom-level access and above can inject arbitrary web scripts that execute when a user accesses an injected page.

Risk Assessment

An attacker can inject malicious scripts that execute in the user's browser, potentially leading to session theft, account takeover, or other attacks. Authentication is required, but author-level privileges are sufficient.

Recommendation

Update the plugin to the latest patched version and restrict user permissions to edit meta settings.

Related vulnerabilities

Original NVD description (English source)

The Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'delay' Post Meta Setting in all versions up to, and including, 3.111.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The ml-slider custom post type is registered without custom capability restrictions and the ml-slider_settings meta key is unprotected, allowing Author-level users to set the malicious delay value via XML-RPC custom_fields when creating an ml-slider post.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS