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.
CVE-2026-2918 is a medium severity with CVSS 6.4 Stored Cross-Site Scripting issue affecting the Plugin Happy Addons for Elementor. It affects Versions up to 3.21.0 and is fixed in 3.21.1.
CVE-2026-2918 is tracked for the Plugin Happy Addons for Elementor as medium severity with CVSS 6.4. The affected range is Versions up to 3.21.0. Update Happy Addons for Elementor to 3.21.1 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
happy-elementor-addons
View on wordpress.org
|
| CVE | CVE-2026-2918 |
| Patched Versions |
3.21.1
|
| Affected Versions |
Versions up to 3.21.0
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Happy Addons for Elementor <= 3.20.4 - Authenticated (Contributor+) SQL Injection
Happy Addons for Elementor <= 3.20.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via '_elementor_data' Meta Field
Happy Addons for Elementor <= 3.20.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Custom JS
Happy Addons for Elementor <= 3.16.2 - Authenticated (Contributor+) Stored Cross-Site Scripting
Happy Addons for Elementor <= 3.15.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
Happy Addons for Elementor <= 3.12.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via Image Comparison
Happy Addons for Elementor <= 3.12.0 - Authenticated (Contributor+) Stored Cross-Site Scripting
Happy Addons for Elementor <= 3.11.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via PDF View Widget
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