CVE-2026-56291 Balbooa Forms: dangerous file upload
In plain words: The program accepts files it should refuse, such as programs disguised as ordinary uploads. The attacker can place and run their own tools on the server.
Confirmed exploited by CISA on · US federal patch deadline Jul 13, 2026
What to do
- Install Balbooa's security update for Forms. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- Balbooa Forms Unrestricted Upload of File with Dangerous Type Vulnerability
- Product
- Balbooa Forms
- CISA description
- Balbooa Forms contains an unrestricted upload of file with dangerous type vulnerability that allows an unauthenticated arbitrary file upload which could allow uploading of executable files leading to full RCE.
- Type of flaw
- Dangerous file upload (CWE-434)
- Confirmed exploited
- Jul 10, 2026
- US federal patch deadline
- Jul 13, 2026
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Answering about CVE-2026-56291 ·
Questions about CVE-2026-56291
Is CVE-2026-56291 being exploited?
Yes. CISA added CVE-2026-56291 to its Known Exploited Vulnerabilities catalog on Jul 10, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2026-56291?
Install Balbooa's security update for Forms. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2026-56291?
Only if you use Balbooa Forms. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.