CVE-2006-5128 in ConPresso
Summary
by MITRE
SQL injection vulnerability in index.php in Bartels Schoene ConPresso before 4.0.5a allows remote attackers to execute arbitrary SQL commands via the nr parameter.
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Analysis
by VulDB Data Team • 04/23/2026
The vulnerability identified as CVE-2006-5128 represents a critical sql injection flaw within the Bartels Schoene ConPresso content management system prior to version 4.0.5a. This vulnerability specifically affects the index.php script and exploits a weakness in how the application processes the nr parameter, creating an avenue for remote attackers to execute arbitrary sql commands against the underlying database. The flaw stems from insufficient input validation and sanitization mechanisms that fail to properly escape or filter user-supplied data before incorporating it into sql queries. This type of vulnerability falls under the category of CWE-89 sql injection as defined by the common weakness enumeration framework, which classifies it as a serious security weakness that can lead to complete database compromise.
The operational impact of this vulnerability extends far beyond simple data theft, as it provides attackers with the capability to manipulate database contents, extract sensitive information, modify or delete records, and potentially escalate privileges within the application environment. Remote exploitation means that attackers can leverage this vulnerability from any location without requiring physical access to the system, making it particularly dangerous for web applications that are publicly accessible. The vulnerability demonstrates a classic sql injection pattern where user input directly influences sql query construction, violating fundamental security principles of input validation and parameterized queries. Attackers can craft malicious payloads targeting the nr parameter to inject sql commands that bypass authentication mechanisms or gain unauthorized access to database resources.
From a threat modeling perspective, this vulnerability aligns with several ATT&CK tactics including initial access through exploitation of web application vulnerabilities and privilege escalation by leveraging database access to perform unauthorized operations. The attack surface is particularly concerning because content management systems like ConPresso typically handle sensitive user data, configuration information, and business-critical content that could be compromised through sql injection attacks. The vulnerability's exploitation requires minimal technical skill and can be automated using standard sql injection tools, making it attractive to both skilled and less experienced threat actors. Organizations running affected versions of ConPresso face significant risk of data breaches, regulatory compliance violations, and potential system compromise that could lead to broader network infiltration.
The recommended mitigation strategies include immediate patching to version 4.0.5a or later, which addresses the input validation issues that enable the sql injection attack. Additionally, implementing proper input sanitization techniques, utilizing parameterized queries, and deploying web application firewalls can provide defense-in-depth measures. Organizations should also conduct comprehensive security assessments of their web applications to identify similar vulnerabilities and establish robust input validation policies. The vulnerability highlights the importance of keeping software components updated and following secure coding practices that prevent sql injection through proper parameterization and input filtering mechanisms.