CVE-2017-20269
Summary
by MITRE • 06/19/2026
Joomla! Component KissGallery 1.0.0 contains an SQL injection vulnerability that allows unauthenticated attackers to inject SQL commands through the component URL path. Attackers can supply malicious SQL code in the kissgallery endpoint to execute arbitrary database queries and extract sensitive information.
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Analysis
by VulDB Data Team • 06/19/2026
The Joomla! KissGallery component version 1.0.0 presents a critical SQL injection vulnerability that exposes systems to unauthenticated attack vectors. This flaw exists within the component's URL path handling mechanism, where input validation is insufficient to prevent malicious SQL code injection. The vulnerability stems from improper sanitization of user-supplied parameters that are directly incorporated into database query constructs without adequate escaping or parameterization. Attackers can exploit this weakness by crafting malicious requests to the kissgallery endpoint, thereby bypassing authentication requirements and gaining unauthorized access to backend database operations.
The technical implementation of this vulnerability aligns with CWE-89 which specifically addresses SQL injection flaws where untrusted data is incorporated into SQL commands without proper validation or escaping. The attack surface is particularly dangerous because it operates at the component level within the Joomla! content management framework, allowing adversaries to leverage the component's legitimate database access privileges. When malicious SQL payloads are submitted through the URL path, the application processes these inputs directly within database query contexts, enabling attackers to execute arbitrary database commands. This vulnerability type falls under the ATT&CK technique T1213.002 which covers data from information repositories, specifically targeting database systems through injection attacks.
The operational impact of this vulnerability extends beyond simple data extraction to encompass complete database compromise scenarios. Attackers can leverage the SQL injection to perform read operations on sensitive tables containing user credentials, configuration data, and application metadata. The vulnerability also enables write operations that could result in data modification, deletion, or even privilege escalation within the database environment. Additionally, attackers may utilize this vulnerability to establish persistent access through database user account manipulation or by injecting backdoor code within the database itself. The unauthenticated nature of the attack means that any system running the vulnerable component is immediately at risk without requiring prior access credentials or privileged information.
Mitigation strategies for this vulnerability should prioritize immediate patching of the KissGallery component to version 1.0.1 or later, which includes proper input validation and parameterized query implementations. Organizations should implement web application firewalls with SQL injection detection capabilities to monitor and block malicious payloads attempting to exploit this vulnerability. Database access controls must be reviewed to ensure that application database accounts operate with minimal required privileges, adhering to the principle of least privilege. Network segmentation should be implemented to isolate database servers from direct web application access where possible, reducing the attack surface for SQL injection exploits. Input validation mechanisms should be strengthened to sanitize all user-supplied parameters before processing, and all database queries should be implemented using parameterized statements or prepared queries to prevent injection attacks. Regular security assessments and penetration testing should be conducted to identify and remediate similar vulnerabilities across the entire Joomla! installation and associated components.