CVE-2026-66915
Received Received - Intake

Remote Code Execution in Fabrik Joomla Extension

Publication date: 2026-08-10

Last updated on: 2026-08-10

Assigner: Joomla! Project

Description
Joomla Extension - fabrikar.com - Remote code execution in Fabrik < 4.6.7 - An unauthenticated attacker could execute arbitrary code by using the ajax_calc feature of the calc plugin.

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Meta Information

Published
2026-08-10
Last Modified
2026-08-10
Generated
2026-08-10
AI Q&A
2026-08-10
EPSS Evaluated
N/A
NVD
CVE-2026-66915
EUVD
EUVD-2026-55159

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
fabrik calc to 4.6.7 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

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Executive Summary

This vulnerability is a remote code execution flaw in the Fabrik Joomla extension versions before 4.6.7. An unauthenticated attacker can execute arbitrary code by exploiting the ajax_calc feature in the calc plugin.

Detection Guidance

To detect this vulnerability, check if Fabrik versions older than 4.6.7 are installed. Inspect Joomla extensions for the calc plugin and verify if the ajax_calc feature is accessible without authentication. Review server logs for suspicious requests targeting Fabrik components.

Impact Analysis

An attacker could gain full control over your Joomla site, steal sensitive data, install malware, or deface the website. Since no authentication is required, any internet-facing site using vulnerable Fabrik versions is at immediate risk.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR and HIPAA requirements for data protection and security. Organizations may face fines, legal penalties, and reputational damage if exploited.

Mitigation Strategies

Immediately update Fabrik to version 4.6.7 or later. Disable the calc plugin if not in use. Restrict access to Joomla admin interfaces and review user permissions. Monitor network traffic for unusual activity related to Fabrik components.

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