CVE-2026-56291 Scanner

Balbooa Forms is a popular extension designed for Joomla, primarily used by webmasters and content creators to create and manage forms on their websites. This extension is favored due to its user-friendly interface and extensive customization options, allowing for a wide range of form types to be implemented. It is widely adopted in various industries for collecting user data, conducting surveys, and managing contact forms. The extension facilitates seamless form integrations within Joomla websites, making it a go-to tool for many site administrators. However, like any software, it requires regular updates and maintenance to protect against potential vulnerabilities. Users rely on it for efficient form management, expecting robust security and functionality.

The Unrestricted File Upload vulnerability detected in Balbooa Forms allows unauthenticated attackers to upload malicious files to the server. This vulnerability, identified in versions prior to 2.4.1, can lead to severe security breaches, including remote code execution. The lack of authentication checks permits attackers to upload executable files, bypassing traditional security measures. This kind of vulnerability is particularly dangerous because it can lead to a complete system compromise if exploited. Proper patch management and vulnerability assessments are crucial in preventing such exploits in web applications. Ensuring robust input validation and proper permissions can mitigate the risks associated with this vulnerability.

The vulnerability exploits the file upload functionality in Balbooa Forms where authentication checks are bypassed, allowing arbitrary files to be uploaded. The vulnerable endpoint is accessed via a POST request to `/index.php?option=com_baforms&task=form.uploadAttachmentFile&form_id=1`. The crafted request includes form data with a malicious file, which is stored in the uploads directory if successful. The verification of the exploit can be performed by accessing the uploaded file directly through an HTTP GET request. The vulnerability arises from insufficient checks in the file upload script, which does not validate the file types or ensure proper user authorization. This vulnerability allows remote attackers to upload any file type, which can then be executed on the server.

If exploited, this vulnerability can result in a full system compromise, allowing attackers to execute arbitrary code on the server. Unauthenticated attackers can leverage this to install backdoors, deface websites, or use the server resources for illegal operations like hosting malicious content or sending spam. The repercussions can extend to data breaches, unauthorized data manipulation, and potential lateral movement within the network. This can harm the reputation of the affected websites and can cause substantial financial and operational losses. Regular audits and updates can help mitigate such risks and maintain the security posture of web applications.

REFERENCES

• https://nvd.nist.gov/vuln/detail/CVE-2026-56291
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog