CVE-2026-2918
MEDIUMCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Lifecycle Timeline
2Description
The Happy Addons for Elementor plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.21.0 via the `ha_condition_update` AJAX action. This is due to the `validate_reqeust()` method using `current_user_can('edit_posts', $template_id)` instead of `current_user_can('edit_post', $template_id)` - failing to perform object-level authorization. Additionally, the `ha_get_current_condition` AJAX action lacks a capability check. This makes it possible for authenticated attackers, with Contributor-level access and above, to modify the display conditions of any published `ha_library` template. Because the `cond_to_html()` renderer outputs condition values into HTML attributes without proper escaping (using string concatenation instead of `esc_attr()`), an attacker can inject event handler attributes (e.g., `onmouseover`) that execute JavaScript when an administrator views the Template Conditions panel, resulting in Stored Cross-Site Scripting.
Analysis
Authenticated contributors to WordPress sites running Happy Addons for Elementor up to version 3.21.0 can modify display conditions of published templates due to improper authorization checks in the `ha_condition_update` AJAX action and missing capability validation in `ha_get_current_condition`. The vulnerability allows attackers to alter template visibility rules and potentially inject unescaped content into HTML attributes, affecting site content delivery and potentially enabling stored XSS attacks.
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Remediation
Within 30 days: Identify affected systems running for WordPress is vulnerable to Insecure Direct Object Refere and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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