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CVE-2024-3285: Slider, Gallery, and Carousel by MetaSlider – Responsive WordPress Slideshows <= 3.70.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via metaslider Shortcode

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-04-11 · updated 2026-06-17
• Weakness: CWE-79

Description

The Slider, Gallery, and Carousel by MetaSlider – Responsive WordPress Slideshows plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'metaslider' shortcode in all versions up to, and including, 3.70.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• metaslider Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider: before 3.70.1 — fixed in 3.70.1

How to fix

Upgrade to a fixed version: metaslider Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider 3.70.1. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/3067751/ml-slider
• https://www.wordfence.com/threat-intel/vulnerabilities/id/1cbd95bb-6f13-48c9-a51e-5f7bf7a296df?source=cve
• https://plugins.trac.wordpress.org/changeset/3067751/ml-slider
• https://www.wordfence.com/threat-intel/vulnerabilities/id/1cbd95bb-6f13-48c9-a51e-5f7bf7a296df?source=cve

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