CVE-2026-56291

Joomla Extension - balbooa.com - Unauthenticated file upload in Balbooa Forms extension < 2.4.1 - The Joomla extension Balbooa Forms is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.

Score

CVSS 4.0 10.0 Critical

Status

Analyzed - security@joomla.org

Published

2026-07-09

Last modified

2026-10-25

Known exploited (CISA KEV)

since 2026-07-10, action due 2026-07-13: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Weaknesses

CWE-434

Affected products

• Forms (Balbooa)
• Balbooa.com Balbooa Forms Extension For Joomla (Balbooa.com)

References

• https://www.balbooa.com/joomla-forms
• https://mysites.guru/blog/balbooa-forms-unauthenticated-file-upload-flaw/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-56291