Is CVE-2026-6518 actively exploited?

No active exploitation of CVE-2026-6518 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-6518 be exploited remotely?

Yes. CVE-2026-6518 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-6518?

CVE-2026-6518 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2026-6518

HIGH

CVE-2026-6518

CWE-434Published: April 18, 2026· Updated: Apr 22, 2026

8.8

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:18.9th

Official 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.

NVD Source

Technical Analysis

CVE-2026-6518 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.