CVE-2025-5337: Slider, Gallery, and Carousel by MetaSlider <= 3.98.0 - Authenticated (Contributor+) Stored DOM-Based Cross-Site Scripting via aria-label Parameter
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.
Classification
CVE ID: CVE-2025-5337
CVSS Base Severity: MEDIUM
CVSS Base Score: 6.4
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Problem Types
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Affected Products
Vendor: metaslider
Product: Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.03% (probability of being exploited)
EPSS Percentile: 7.0% (scored less or equal to compared to others)
EPSS Date: 2025-06-15 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-5337https://www.wordfence.com/threat-intel/vulnerabilities/id/0e6492e5-a506-4d77-96d2-08f700b6ee76?source=cve
https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.98.0/assets/metaslider/script.js#L11
https://wordpress.org/plugins/ml-slider/#developers
https://plugins.trac.wordpress.org/changeset/3309932/ml-slider/tags/3.99.0/assets/metaslider/script.js