CVE-2026-18561

Unlimited Elements For Elementor <= 2.0.16 - Unauthenticated SQL Injection

2026-09-10 14:43
Yuto Hyakumoto

Strategic Overview

Status
Patched in 2.0.17
Affected Plugin
Unlimited Elements For Elementor
Affected Version
<= 2.0.16
CVSS
7.5High
Weakness type
CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVE
CVE-2026-18561
View all Unlimited Elements For Elementor vulnerabilities

At a glance

CVE-2026-18561 is a high-severity Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in the Unlimited Elements For Elementor WordPress plugin, affecting versions <= 2.0.16. It carries a CVSS score of 7.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires no authentication. The issue is fixed in version 2.0.17; sites on affected versions should update now. Disclosed September 2026, reported by Yuto Hyakumoto.

Vulnerability Overview

The Unlimited Elements For Elementor plugin for WordPress is vulnerable to SQL Injection via the 'addontype' parameter in versions up to, and including, 2.0.16. This is due to insufficient escaping on the user-supplied parameter and the lack of sufficient preparation on the existing SQL query in the getWhereString() function; when the parameter is supplied as an array, element zero is used verbatim as the SQL comparison operator and concatenated into the WHERE clause without sanitization, while normalizeAjaxInputData() strips WordPress's magic_quotes protection from the value. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

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.

CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Unlimited Elements For Elementor <= 2.0.16 carries this weakness at addontype, and reaching it takes no account at all. SQL injection happens when request data is concatenated into a query instead of being bound as a parameter, letting an attacker change the structure of the statement rather than just its values.

A working injection can read any table the database user can see, which on a WordPress install means user records, password hashes and session or API secrets stored in options. For Unlimited Elements For Elementor the fix is 2.0.17: builds <= 2.0.16 are affected, anything from 2.0.17 onward is not.

Remediation

Update to version 2.0.17, 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. None of that substitutes for the fix: Unlimited Elements For Elementor 2.0.17 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-18561https://www.wordfence.com/threat-intel/vulnerabilities/id/969d605d-e093-447c-abf7-0d56cb3ac569https://nvd.nist.gov/vuln/detail/CVE-2026-18561

Related records

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