CVE-2025-6327

King Addons for Elementor <= 51.1.36 - Unauthenticated Arbitrary File Upload

2025-10-21 00:00
Najib Sinjari

Strategic Overview

Status
Patched in 51.1.37
Affected Plugin
King Addons for Elementor – 80+ Elementor Widgets, 4 000+ Elementor Templates, WooCommerce, Mega Menu, Popup Builder
Affected Version
<= 51.1.36
CVSS
9.8Critical
Weakness type
CWE-434 · Unrestricted Upload of File with Dangerous Type
CVE
CVE-2025-6327
View all King Addons for Elementor – 80+ Elementor Widgets, 4 000+ Elementor Templates, WooCommerce, Mega Menu, Popup Builder vulnerabilities

At a glance

CVE-2025-6327 is a critical-severity Unrestricted Upload of File with Dangerous Type vulnerability in the King Addons for Elementor WordPress plugin, affecting versions <= 51.1.36. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 51.1.37; sites on affected versions should update now. Disclosed October 2025, reported by Najib Sinjari.

Vulnerability Overview

The King Addons for Elementor – 4,000+ ready Elementor sections, 650+ templates, 70+ FREE widgets for Elementor plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 51.1.36. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-434: Unrestricted Upload of File with Dangerous Type

Reaching this weakness in King Addons for Elementor <= 51.1.36 takes no account at all. An unrestricted file upload lets a caller store a file whose type or destination the application does not properly constrain.

If an uploaded file lands anywhere the server will execute, the flaw becomes remote code execution and the site should be treated as fully compromised. For King Addons for Elementor the fix is 51.1.37: builds <= 51.1.36 are affected, anything from 51.1.37 onward is not.

Remediation

Update to version 51.1.37, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: King Addons for Elementor 51.1.37 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Scanner
  • Login Security

External References

https://www.cve.org/CVERecord?id=CVE-2025-6327https://www.wordfence.com/threat-intel/vulnerabilities/id/76dbd82d-60a4-40c8-8f66-6bbe45b4d199https://nvd.nist.gov/vuln/detail/CVE-2025-6327

Related records

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