Description
The WPBakery Page Builder Addons by Livemesh plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `[lvca_carousel]` and `[lvca_posts_carousel]` shortcode attributes in all versions up to, and including, 3.9.4 due to insufficient input sanitization and output escaping. Specifically, shortcode attributes are encoded with `wp_json_encode()` and output into single-quoted `data-settings` HTML attributes without using `esc_attr()`, allowing attackers to break out of the attribute by injecting single quotes. 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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
livemesh WPBakery Page Builder Addons by Livemesh
Default version status: unaffected
0 to ≤ 3.9.4affected
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ac1493dc-a90a-4427-a631-af5da65e1d6c?source=cve ↗
- https://plugins.trac.wordpress.org/browser/addons-for-visual-composer/tags/3.9.4/includes/addons/carousel/class-lvca-carousel.php#L55 ↗
- https://plugins.trac.wordpress.org/browser/addons-for-visual-composer/tags/3.9.4/includes/addons/posts-carousel/class-lvca-posts-carousel.php#L113 ↗