CVE-2005-0936 in PayPal Storefront
Summary
by MITRE
Cross-site scripting vulnerability in products1h.php in ESMI PayPal Storefront allows remote attackers to inject arbitrary web script or HTML via the id parameter.
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Analysis
by VulDB Data Team • 06/29/2025
The vulnerability identified as CVE-2005-0936 represents a classic cross-site scripting flaw within the ESMI PayPal Storefront software suite, specifically affecting the products1h.php script. This issue resides in the handling of user-supplied input through the id parameter, creating a pathway for malicious actors to execute arbitrary web scripts or HTML content within the context of affected users' browsers. The vulnerability demonstrates a fundamental failure in input validation and output encoding practices that have been recognized as critical security weaknesses since the early 2000s.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL containing crafted script code within the id parameter of the products1h.php endpoint. When a victim clicks such a link or navigates to the malicious page, the embedded script executes in the victim's browser within the context of the legitimate website, potentially allowing attackers to steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users. This type of vulnerability directly maps to CWE-79 which categorizes cross-site scripting as a code injection flaw where untrusted data is improperly integrated into web pages without proper sanitization or encoding. The vulnerability also aligns with ATT&CK technique T1566 which describes the use of malicious links to deliver payloads through social engineering or direct exploitation.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable sophisticated attack chains including session hijacking, data exfiltration, and privilege escalation within the application context. For e-commerce platforms like the ESMI PayPal Storefront, this represents a significant risk since attackers could potentially access customer account information, manipulate product displays, or redirect users to phishing sites. The vulnerability affects the integrity and confidentiality of the web application, undermining user trust and potentially leading to financial losses through unauthorized transactions or data breaches.
Mitigation strategies for CVE-2005-0936 should focus on implementing robust input validation and output encoding mechanisms throughout the application stack. The primary defense involves sanitizing all user-supplied input parameters, particularly those used in dynamic content generation, through proper HTML escaping and context-appropriate encoding. Implementing a Content Security Policy (CSP) header can provide additional protection by restricting script execution sources and preventing unauthorized code injection. Organizations should also consider implementing proper input validation frameworks that reject or sanitize potentially malicious content before it can be processed by the application. Regular security testing including dynamic application security testing and manual code reviews should be conducted to identify and remediate similar vulnerabilities in other application components. The vulnerability also underscores the importance of keeping web applications updated with the latest security patches and following secure coding practices that prevent injection flaws from occurring in the first place.