CMP – Coming Soon & Maintenance Plugin by NiteoThemes: Dangerous file upload
CMP – Coming Soon & Maintenance Plugin by NiteoThemes is affected by dangerous file upload. Exploitation requires at least administrator-level access. Successful exploitation can place attacker-controlled executable content on the server and may lead to full site compromise. The published affected range is <= 4.1.16.
- Component
- CMP – Coming Soon & Maintenance Plugin by NiteoThemes
- Plugin slug
cmp-coming-soon-maintenance- Affected
- <= 4.1.16
- Safe version
> 4.1.16- Published
- Apr 18, 2026
This CVE was published Apr 18, 2026 and is one of 5 known issues for this plugin.
Update, patch or deactivate.
Update CMP – Coming Soon & Maintenance Plugin by NiteoThemes to a release after 4.1.16, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The CMP – Coming Soon & Maintenance Plugin by NiteoThemes plugin for WordPress is vulnerable to arbitrary file upload and remote code execution in all versions up to, and including, 4.1.16 via the `cmp_theme_update_install` AJAX action. This is due to the function only checking for the `publish_pages` capability (available to Editors and above) instead of `manage_options` (Administrators only), combined with a lack of proper validation on the user-supplied file URL and no verification of the downloaded file's content before extraction. This makes it possible for authenticated attackers, with Administrator-level access and above, to force the server to download and extract a malicious ZIP file from a remote attacker-controlled URL into a web-accessible directory (`wp-content/plugins/cmp-premium-themes/`), resulting in remote code execution. Due to the lack of a nonce for Editors, they are unable to exploit this vulnerability.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H