---
id: CVE-2026-56291
title: >-
  The Joomla extension Balbooa Forms is vulnerable to an unauthenticated
  arbitrary file upload that allows uploading executable files and leads to full
  RCE.
summary: >-
  The Joomla extension Balbooa Forms is vulnerable to an unauthenticated
  arbitrary file upload that allows uploading executable files and leads to full
  RCE.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-434
vendor: balbooa
product: forms
affected:
  - forms < 2.4.1
patched:
  - forms 2.4.1
published: '2026-07-09'
updated: '2026-07-11'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-56291'
references:
  - url: 'https://mysites.guru/blog/balbooa-forms-unauthenticated-file-upload-flaw/'
    label: security@joomla.org
  - url: 'https://www.balbooa.com/joomla-forms'
    label: security@joomla.org
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-56291
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
  - exploit-available
epss: 0.14854
epssPercentile: 0.96574
kev: true
kevDateAdded: '2026-07-10'
kevDueDate: '2026-07-13'
kevRansomware: false
exploited: true
zeroDay: true
ingestedAt: '2026-07-11T20:15:25.627Z'
exploits:
  github: 4
  githubRepos:
    - 'https://github.com/shinthink/CVE-2026-56291'
    - 'https://github.com/0xdenis77/CVE-2026-56291'
    - 'https://github.com/rimbadirgantara/CVE-2026-56291.yaml'
  nuclei:
    - CVE-2026-56291
  checkedAt: '2026-09-25T08:21:03.801Z'
exploitAvailable: true
---

## Overview

The Joomla extension Balbooa Forms is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.

## Affected

- `forms < 2.4.1`

## Remediation

Upgrade past the affected range:

- `forms 2.4.1`