CVE-2010-0376 in Php Calendars Script
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in product_list.php in JCE-Tech PHP Calendars, downloaded 2010-01-11, allows remote attackers to inject arbitrary web script or HTML via the cat parameter. NOTE: this issue is reportedly resultant from a forced SQL error message that occurs from exploitation of CVE-2010-0375.
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Analysis
by VulDB Data Team • 04/29/2026
The vulnerability identified as CVE-2010-0376 represents a cross-site scripting flaw within the JCE-Tech PHP Calendars application, specifically affecting the product_list.php script. This security weakness manifests when the application processes the cat parameter without adequate input validation or output sanitization, creating an avenue for malicious actors to inject arbitrary web scripts or HTML content into the application's response. The vulnerability emerged from the broader context of a related SQL injection issue documented in CVE-2010-0375, where the exploitation of that vulnerability triggers a forced SQL error message that inadvertently exposes the XSS vulnerability. This cascading effect demonstrates how a single underlying security flaw can compound into multiple attack vectors, highlighting the importance of comprehensive security testing and proper error handling mechanisms in web applications.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious payload containing script code and passes it through the cat parameter in the product_list.php script. When the vulnerable application processes this input and displays it without proper sanitization, the injected scripts execute within the context of other users' browsers who view the affected page. This behavior aligns with CWE-79, which categorizes cross-site scripting vulnerabilities as weaknesses that allow attackers to inject malicious scripts into web pages viewed by other users. The attack vector operates at the application layer where user-supplied data is directly rendered without appropriate security controls, making it particularly dangerous for web applications that handle user interactions. The forced SQL error message mentioned in the description serves as a critical component of the exploitation chain, as it provides attackers with information about the application's internal structure and potentially reveals database schema details that can be leveraged for further attacks.
The operational impact of CVE-2010-0376 extends beyond simple script injection, as it can enable attackers to perform various malicious activities including session hijacking, credential theft, and redirection to malicious websites. When users browse the affected calendar application, their browsers execute the injected scripts, potentially compromising their sessions and exposing sensitive information. The vulnerability particularly affects web applications that rely on user-generated content or dynamic parameter handling, where the lack of proper input validation creates persistent security risks. Organizations using JCE-Tech PHP Calendars would face potential reputational damage, compliance violations, and direct financial losses if this vulnerability were exploited in production environments. The cascading nature of the vulnerability through CVE-2010-0375 means that exploitation of the SQL injection flaw could lead to the broader compromise of the application's security posture, making it essential for administrators to address both vulnerabilities simultaneously.
Mitigation strategies for CVE-2010-0376 should focus on implementing robust input validation and output sanitization measures within the application code. The most effective approach involves properly escaping all user-supplied data before rendering it in the application's response, using context-appropriate encoding techniques such as HTML entity encoding for web content. Developers should implement proper error handling that prevents sensitive information from being exposed to end users, ensuring that SQL errors are logged securely without revealing database structure details. The application should also employ Content Security Policy headers to limit script execution and prevent unauthorized code injection. Additionally, organizations should consider implementing web application firewalls that can detect and block malicious payloads targeting XSS vulnerabilities. Regular security assessments and code reviews should be conducted to identify similar input validation weaknesses throughout the application, as this vulnerability demonstrates how seemingly minor flaws can create significant security risks when combined with other vulnerabilities. The remediation process should also include updating to the latest version of the JCE-Tech PHP Calendars application, as the vendor would have likely addressed both CVE-2010-0375 and CVE-2010-0376 in subsequent releases. According to ATT&CK framework, this vulnerability would be classified under T1059.008 for the execution of malicious scripts and potentially T1566 for the initial compromise through web application vulnerabilities, emphasizing the need for comprehensive defensive measures.