What’s Vulnerable › Vulnerabilities

CVE-2025-5337: Slider, Gallery, and Carousel by MetaSlider <= 3.98.0 - Authenticated (Contributor+) Stored DOM-Based Cross-Site Scripting via aria-label Parameter

• 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: 2025-06-14 · updated 2026-06-17
• Weakness: CWE-79

Description

The Slider, Gallery, and Carousel by MetaSlider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘aria-label’ parameter in all versions up to, and including, 3.98.0 due to insufficient input sanitization and output escaping. 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 3.99.0 — fixed in 3.99.0

How to fix

Upgrade to a fixed version: metaslider Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider 3.99.0. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.98.0/assets/metaslider/script.js#L11
• https://plugins.trac.wordpress.org/changeset/3309932/ml-slider/tags/3.99.0/assets/metaslider/script.js
• https://wordpress.org/plugins/ml-slider/#developers
• https://www.wordfence.com/threat-intel/vulnerabilities/id/0e6492e5-a506-4d77-96d2-08f700b6ee76?source=cve

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