CVE-2026-56291
Balbooa Forms Unrestricted Upload of File with Dangerous Type Vulnerability - [Actively Exploited]
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.
INFO
Published Date :
July 9, 2026, 11:16 a.m.
Last Modified :
July 24, 2026, 1:30 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
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.
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.
Unknown
https://www.balbooa.com/joomla-forms ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-56291
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | 6ff30186-7fb7-4ad9-be33-533e7b05e586 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update the Joomla extension to the latest version.
- Configure upload restrictions carefully.
- Validate all uploaded file types.
Public PoC/Exploit Available at Github
CVE-2026-56291 has a 9 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-56291.
| URL | Resource |
|---|---|
| https://mysites.guru/blog/balbooa-forms-unauthenticated-file-upload-flaw/ | Exploit Third Party Advisory |
| https://www.balbooa.com/joomla-forms | Product |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-56291 | US Government Resource |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-56291 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-56291
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
The Joomla extension Balbooa Forms is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.
Python
Mendeteksi versi (passive detection) & Exploitation CVE POC
cve-2026-56291
Python
nuclei template for CVE-2026-56291
None
TypeScript JavaScript CSS
Balbooa Forms (com_baforms) < 2.4.1 — Unauthenticated File Upload to RCE via form.uploadAttachmentFile | CVSS 9.8 | CISA KEV
cisa-kev cve exploit file-upload joomla rce
Python
None
Python JavaScript Shell
Audit CVE impact, patch status, remediation progress, and verification results across systems.
Makefile Go
Threat Hunting based on KQL
Panel de ciberamenazas que se actualiza solo: nuevas amenazas y vulnerabilidades activas cada 6 horas.
CSS Python HTML JavaScript
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-56291 vulnerability anywhere in the article.
-
The Cyber Express
ZTNA Emerges as VPN Security Risks Put Federal Networks on Alert
Federal agencies are facing growing pressure to evaluate ZTNA as an alternative to traditional VPN architectures, as cybersecurity threats expose weaknesses in internet-facing remote access systems. W ... Read more
-
The Cyber Express
CISA Adds SonicWall SMA1000 Vulnerabilities to KEV Catalog Following Active Exploitation
Security researchers have identified two critical vulnerabilities, CVE-2026-15409 and CVE-2026-15410, affecting SonicWall SMA1000 Series appliances. The flaws are already being exploited in the wild, ... Read more
-
The Cyber Express
Microsoft’s Largest Patch Tuesday Fixes 622 Vulnerabilities, Two Under Active Attack
Microsoft Patch Tuesday July 2026 delivered the company’s largest security update to date, addressing 622 Microsoft CVEs, more than tripling the roughly 200 vulnerabilities patched in June. Among the ... Read more
-
The Cyber Express
Three Russians Indicted in $62M Cybercrime Scheme Targeting U.S. Infrastructure
Three Russian nationals have been charged in a sweeping Russian cybercrime indictment tied to an alleged bulletproof hosting operation that U.S. authorities say enabled ransomware, malware, phishing, ... Read more
-
The Cyber Express
RabbitMQ Vulnerability Exposes OAuth Secrets to Attackers
A newly disclosed RabbitMQ vulnerability, tracked as CVE-2026-5721, has raised concerns among enterprise users after researchers revealed that the flaw could allow unauthenticated attackers to retriev ... Read more
-
security.nl
Joomla-websites aangevallen via kwetsbare extensies meldt VS
Joomla-websites zijn het doelwit van aanvallen waarbij aanvallers kwetsbaarheden in de extensies iCagenda en Balbooa Forms misbruiken om PHP-code op de webserver uit te voeren, zo meldt het Amerikaans ... Read more
-
The Cyber Express
CISA Warns of Actively Exploited Joomla Zero-Day Vulnerabilities
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added CVE-2026-48939 and CVE-2026-56291 to its Known Exploited Vulnerabilities (KEV) catalog after reports confirmed active zero-da ... Read more
-
The Hacker News
iCagenda and Balbooa Forms Joomla Flaws Reportedly Exploited as Zero-Days
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two maximum-severity security flaws impacting iCagenda and Balbooa extensions for Joomla to its Known Exploited Vulnerabiliti ... Read more
The following table lists the changes that have been made to the
CVE-2026-56291 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Modified Analysis by [email protected]
Jul. 24, 2026
Action Type Old Value New Value -
CVE Modified by [email protected]
Jul. 23, 2026
Action Type Old Value New Value Changed Description The Joomla extension Balbooa Forms is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE. 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. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 11, 2026
Action Type Old Value New Value Changed SSVC {'id': 'CVE-2026-56291', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-10T17:37:28.650902Z'} {'id': 'CVE-2026-56291', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-10T00:00:00+00:00'} -
Modified Analysis by [email protected]
Jul. 10, 2026
Action Type Old Value New Value Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-56291 Types: US Government Resource -
CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725
Jul. 10, 2026
Action Type Old Value New Value Added Date Added 2026-07-10 Added Due Date 2026-07-10 Added Required Action 2026-07-10 Added Vulnerability Name 2026-07-10 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 10, 2026
Action Type Old Value New Value Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-56291 Changed SSVC {'id': 'CVE-2026-56291', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-09T13:48:48.403173Z'} {'id': 'CVE-2026-56291', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-10T17:37:28.650902Z'} -
Initial Analysis by [email protected]
Jul. 10, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:balbooa:forms:*:*:*:*:*:joomla!:*:* versions up to (excluding) 2.4.1 Added Reference Type Joomla! Project: https://mysites.guru/blog/balbooa-forms-unauthenticated-file-upload-flaw/ Types: Exploit, Third Party Advisory Added Reference Type Joomla! Project: https://www.balbooa.com/joomla-forms Types: Product -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 09, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-56291', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-09T13:48:48.403173Z'} -
New CVE Received by [email protected]
Jul. 09, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'balbooa.com', 'product': 'balbooa.com Balbooa Forms extension for Joomla', 'versions': [{'status': 'affected', 'version': '1.0-2.4.0'}], 'defaultStatus': 'unaffected'}] Added Description The Joomla extension Balbooa Forms is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:Red Added CWE CWE-434 Added Reference https://mysites.guru/blog/balbooa-forms-unauthenticated-file-upload-flaw/ Added Reference https://www.balbooa.com/joomla-forms