Unauthenticated Arbitrary File Upload Vulnerability in Balbooa Forms Extension for Joomla
CVE-2026-56291

10CRITICAL

Key Information:

Vendor
CVE Published:
9 July 2026

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 76%🦅 CISA Reported

What is CVE-2026-56291?

The Balbooa Forms extension for Joomla contains a vulnerability that allows unauthenticated users to upload arbitrary files, including executable files. This flaw can be exploited to achieve remote code execution (RCE), posing a significant security threat to sites leveraging this extension. It is essential for administrators to apply the latest security patches to mitigate potential risks associated with this vulnerability.

CISA has reported CVE-2026-56291

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2026-56291 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: 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.

Affected Version(s)

balbooa.com Balbooa Forms extension for Joomla 1.0-2.4.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

References

EPSS Score

76% chance of being exploited in the next 30 days.

CVSS V4

Score:
10
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • Vulnerability published

  • Vulnerability Reserved

Credit

Phil Taylor
.