Prime Slider – Hero Slider, Carousel, WooCommerce & Post Slider Elementor Addons <= 4.7.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via UIkit Component Attributes
- ID
- WPSEC-2026-0800
- Plugin
- Prime Slider – Hero Slider, Carousel, WooCommerce & Post Slider Elementor Addons (bdthemes-prime-slider-lite)
- Affected
- all versions before 4.7.1
- Remediation
- Update to 4.7.1 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-12
- Attack surface
- Prime Slider – Hero Slider, Carousel, WooCommerce & Post Slider Elementor Addons on WPSec AttackSurface
- Fix released
- Published
Description
The Prime Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via UIkit component attributes (such as 'data-bdt-svg' and 'data-bdt-lightbox-panel') in Elementor, post and comment content in all versions up to, and including, 4.7.0. This is due to an incomplete fix for an earlier issue. The server-side content guard's regular expression only removed 'bdt-*' and 'data-bdt-*' attributes that were preceded by whitespace, so an attribute separated from the previous one by a slash survived and was then normalised into a working attribute. In addition, the bundled UIkit's client-side fragment sanitizer did not remove control characters before checking URL schemes and did not block elements such as iframe, so markup in a component option could still carry script URLs. 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.
References
- https://wpsec.com/vuln/WPSEC-2026-0800/
- https://plugins.svn.wordpress.org/bdthemes-prime-slider-lite/tags/4.7.1/
- https://wordpress.org/plugins/bdthemes-prime-slider-lite/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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