Description

A vulnerability was detected in DefaultFuction CRM 1.0.0. This impacts an unknown function of the file /modules/customers/delete.php. Performing a manipulation of the argument ID results in sql injection. It is possible to initiate the attack remotely. The exploit is now public and may be used.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.3",
  "pubDate": "2026-09-06T08:16:40.760Z",
  "pubdate": "2026-09-06T08:16:40.760Z",
  "executiveSummary": "A critical SQL injection vulnerability has been identified in DefaultFuction CRM version 1.0.0, specifically located within the /modules/customers/delete.php script.\nThe vulnerability allows an unauthenticated remote attacker to manipulate the 'ID' argument to inject malicious SQL commands, leading to unauthorized database queries.\nThis flaw exposes the backend database to full compromise, potentially resulting in unauthorized data exfiltration, modification, or deletion.\nGiven that the exploit is currently public, the risk to organizations utilizing this software is high, requiring immediate attention to prevent malicious exploitation.\nThe attack is remotely executable, meaning an attacker does not require local network access or prior authentication to initiate the injection process.\nThis vulnerability highlights a critical failure in input validation and parameterized query implementation within the affected module.",
  "technicalDetails": "The vulnerability resides in the /modules/customers/delete.php file of DefaultFuction CRM 1.0.0, which handles customer record deletion operations.\nThe root cause of this vulnerability is the improper neutralization of special elements used in an SQL command, specifically within the 'ID' argument processed by the application.\nThe application fails to employ parameterized queries or prepared statements when handling the 'ID' input, allowing the user-supplied data to be concatenated directly into the backend SQL statement.\nAn attacker can exploit this by crafting a specially formed HTTP request that includes SQL syntax manipulation in the 'ID' parameter. When the server processes this request, the injected SQL code is executed by the database management system (DBMS) under the privileges of the application's database user.\nThe attack flow proceeds as follows: First, the attacker identifies the /modules/customers/delete.php endpoint as the target. Second, the attacker transmits a crafted GET or POST request containing a malicious payload injected into the 'ID' argument. Third, the backend application fails to validate the input and passes the unsanitized string to the database engine. Finally, the database executes the malicious commands, which can range from blind SQL injection queries to extract schema information, to UNION-based injection to retrieve sensitive customer records, or even administrative commands if the database user permissions are excessive.\nAs a remote, network-accessible vulnerability, this flaw does not require the attacker to possess prior credentials or authenticated access to the system. The public availability of the exploit increases the likelihood of automated attacks or targeted campaigns against vulnerable installations.\nPost-exploitation impact includes complete loss of confidentiality, integrity, and availability regarding the CRM's database. An attacker could bypass authentication mechanisms, dump the entire user database, or, depending on the database configuration and permissions, potentially escalate to operating system interaction via functionalities such as 'xp_cmdshell' or equivalent features in other DBMS engines."
}