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Aimy Captcha-Less Form Guard Remote Code Execution Vulnerability (CVE-2026-65883) — CRITICAL Severity

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In this article
  1. Overview
  2. CVE Details
  3. Affected Products
  4. Current Status
  5. Severity Level
  6. Possible Solutions
  7. References

Overview

A critical security flaw has been uncovered in the Aimy Captcha-Less Form Guard extension for Joomla!, posing a significant risk to websites using it. This vulnerability, identified as a PHP object injection, could allow attackers to execute arbitrary code on a server, effectively giving them control over the affected website. It impacts specific versions of the extension and demands immediate attention from IT administrators and developers.

CVE Details

  • Product: Aimy Captcha-Less Form Guard (Joomla! Extension from aimy-extensions.com)
  • Published Date: July 29, 2026
  • Severity: CRITICAL
  • Status: Analyzed

Affected Products

The remote code execution vulnerability (CVE-2026-65883) is present in Aimy Captcha-Less Form Guard versions 18.0 through 20.0. If your Joomla! website uses any of these versions of the extension, it is currently at risk.

Current Status

This vulnerability has been thoroughly analyzed and publicly disclosed. Website owners and administrators running the affected software versions are urged to take swift action to protect their installations and prevent potential exploitation.

Severity Level

With a CVSS score of 9.8, this flaw is classified as “CRITICAL.” This high severity rating indicates that exploiting this vulnerability could lead to a complete compromise of a Joomla! website. An attacker could remotely execute malicious code, potentially installing malware, stealing sensitive data, or defacing the website without authorization.

Possible Solutions

To secure your website against this critical vulnerability, it is essential to update your Aimy Captcha-Less Form Guard extension. The recommended action is to upgrade to the latest available version, which is 20.4 or newer. While the official advisory specifically lists versions up to 20.0 as vulnerable, updating to the most current release ensures you receive all the latest security patches and improvements.

  • Visit the official Aimy Extensions website at https://www.aimy-extensions.com/joomla/captcha-less-form-guard.html to download the newest version of Aimy Captcha-Less Form Guard.
  • Follow the standard Joomla! extension update procedures to apply the patch. Always create a complete backup of your website’s files and database before initiating any updates to prevent data loss.

For more information on securing your Joomla! forms, consider reviewing these articles:

References

https://www.aimy-extensions.com/joomla/captcha-less-form-guard.html

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Alex Joseph

Alex Joseph

Alex Joseph is a Senior Support Staff professional with deep experience in server management, web hosting technologies, and cybersecurity operations. He works daily with Linux servers, cloud platforms, performance tuning, and security hardening, giving him strong real-world technical knowledge. Along with his support role, he write about security best practices, hosting infrastructure, and software management.

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