CVE-2009-4727 in Ajax Short Url Script
Summary
by MITRE
SQL injection vulnerability in x/login in JungleScripts Ajax Short Url Script allows remote attackers to execute arbitrary SQL commands via the username parameter.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 05/02/2026
The CVE-2009-4727 vulnerability represents a critical sql injection flaw within the JungleScripts Ajax Short Url Script authentication mechanism. This vulnerability specifically affects the x/login endpoint where user credentials are processed, creating a pathway for malicious actors to manipulate the underlying database through crafted input parameters. The vulnerability stems from inadequate input validation and sanitization practices within the application's login handling code, allowing attackers to inject malicious sql code that bypasses normal authentication procedures.
The technical exploitation of this vulnerability occurs through the username parameter which is directly incorporated into sql queries without proper parameterization or input filtering. When an attacker submits a specially crafted username value containing sql injection payloads, the application fails to properly escape or validate the input before executing database operations. This design flaw enables attackers to manipulate the sql query structure and potentially extract sensitive information, modify database records, or even gain unauthorized access to administrative functions. The vulnerability aligns with CWE-89 which categorizes sql injection as a fundamental weakness in software applications that fail to properly validate or sanitize user inputs before incorporating them into database queries.
The operational impact of this vulnerability extends beyond simple authentication bypass, as successful exploitation can lead to complete database compromise and potential system takeover. Attackers can leverage this vulnerability to access user credentials, personal information, and other sensitive data stored within the application's database. The remote nature of the attack means that exploitation can occur from any location without requiring physical access to the system, making it particularly dangerous for web applications handling sensitive user data. This vulnerability directly impacts the confidentiality and integrity of the application's data, potentially violating data protection regulations and exposing organizations to significant security risks.
Organizations affected by this vulnerability should implement immediate mitigations including input validation and parameterized queries to prevent sql injection attacks. The recommended solution involves implementing proper input sanitization techniques that escape special characters and utilize prepared statements or parameterized queries for all database interactions. Additionally, implementing web application firewalls and input filtering mechanisms can provide additional layers of protection against such attacks. Security practitioners should also consider implementing proper access controls and monitoring mechanisms to detect unauthorized database access attempts. This vulnerability demonstrates the critical importance of following secure coding practices and adhering to established security frameworks such as those defined in the mitre ATT&CK framework under the database access and credential access tactics, emphasizing the need for comprehensive security controls throughout the application development lifecycle.