CVE-2021-47930
Unauthenticated SQL Injection in Balbooa Joomla Forms Builder
Publication date: 2026-05-10
Last updated on: 2026-05-10
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| balbooa | joomla_forms_builder | 2.0.6 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-89 | The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
Balbooa Joomla Forms Builder version 2.0.6 contains an unauthenticated SQL injection vulnerability in its form submission handler within the com_baforms component.
This vulnerability allows remote attackers to send specially crafted POST requests with malicious JSON payloads in the 'id' field parameter, enabling them to execute arbitrary SQL queries on the database.
As a result, attackers can extract sensitive information from the database without needing to authenticate.
How can this vulnerability impact me? :
Exploitation of this vulnerability can lead to unauthorized access to sensitive database information.
- Attackers can extract confidential data by executing arbitrary SQL queries.
- There is a risk of data modification or deletion due to the ability to run arbitrary SQL commands.
- Since the attack requires no authentication, it can be performed remotely and anonymously.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by monitoring for suspicious POST requests sent to the com_baforms component of the Balbooa Joomla Forms Builder, specifically those containing malicious JSON payloads in the 'id' or 'submission_id' field parameters.
You can use network monitoring or web server logs to identify such requests. For example, using command-line tools like curl or wget to simulate or detect such requests, or grep to search logs for suspicious payloads.
- Use grep to search web server logs for POST requests to the vulnerable endpoint: grep 'POST.*com_baforms' /var/log/apache2/access.log
- Look for suspicious JSON payloads in the 'id' or 'submission_id' fields that might contain SQL syntax, e.g., grep -i 'id=.*SELECT' /var/log/apache2/access.log
- Use curl to test the endpoint with a crafted payload: curl -X POST -H "Content-Type: application/json" -d '{"id":"1 OR 1=1"}' https://yourjoomlasite.com/index.php?option=com_baforms
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include restricting access to the vulnerable com_baforms component, applying input validation and sanitization on the 'id' field, and monitoring for suspicious activity.
Since the vulnerability allows unauthenticated SQL injection, it is critical to update the Balbooa Joomla Forms Builder to a patched version if available.
If an update is not immediately available, consider temporarily disabling the vulnerable component or restricting POST requests to it via firewall or web server rules.
- Apply the latest security patches or updates from Balbooa for the Joomla Forms Builder.
- Restrict access to the com_baforms endpoint using web application firewall (WAF) rules or IP whitelisting.
- Implement input validation and sanitization to prevent malicious SQL payloads.
- Monitor logs for suspicious POST requests targeting the vulnerable fields.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The vulnerability allows remote attackers to execute arbitrary SQL queries and extract sensitive database information without authentication.
Such unauthorized access to sensitive data can lead to violations of data protection regulations like GDPR and HIPAA, which require safeguarding personal and sensitive information against unauthorized access and breaches.
Therefore, exploitation of this vulnerability could result in non-compliance with these standards due to potential data exposure and lack of adequate security controls.