Reported vulnerability

CMP – Coming Soon & Maintenance Plugin by NiteoThemes <= 4.1.16 - Missing Authorization to Authenticated (Administrator+) Arbitrary File Upload and Remote Code Execution

Q: Which versions of CMP – Coming Soon & Maintenance Plugin by NiteoThemes are affected?

Wordfence lists these affected versions: Start version unspecified, through 4.1.16. Use the version checker above to compare your installed release with this report.

Q: Is a fix available for CMP – Coming Soon & Maintenance Plugin by NiteoThemes?

Wordfence reports a fix for this issue in CMP – Coming Soon & Maintenance Plugin by NiteoThemes. It lists these fixed versions: 4.1.17. Back up your website and test the recommended update before applying it to your live site.

Q: Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Published 17 Apr 2026

Updated 18 Apr 2026

CVE-2026-6518

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.

Wordfence advisory

high · CVSS 8.8

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.

Severity vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CMP – Coming Soon & Maintenance Plugin by NiteoThemes

Software: plugin · cmp-coming-soon-maintenance
Affected versions: Start version unspecified, through 4.1.16
Fix availability: Fix available
Fixed versions: 4.1.17

Recommended action

Update to version 4.1.17, or a newer patched version

Further references (1)

wordfence.com/threat-intel/vulnerabilities/id/d6fb275b-dbba-46df-b170-977ef4a84c4c?source=api-prod

Data sources and licences

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CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Read licence terms

Source: Wordfence

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Questions about this vulnerability

Which versions of CMP – Coming Soon & Maintenance Plugin by NiteoThemes are affected?

Wordfence lists these affected versions: Start version unspecified, through 4.1.16. Use the version checker above to compare your installed release with this report.

Is a fix available for CMP – Coming Soon & Maintenance Plugin by NiteoThemes?

Wordfence reports a fix for this issue in CMP – Coming Soon & Maintenance Plugin by NiteoThemes. It lists these fixed versions: 4.1.17. Back up your website and test the recommended update before applying it to your live site.

Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

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