CVE-2025-63607 in TechStore
Summary
by MITRE • 08/31/2026
TechStore 1.0 is vulnerable to Cross Site Scripting (XSS). In contact_display, the application echoes the id parameter verbatim into the rendered page, permitting execution of attacker-supplied JavaScript in users browser.
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Analysis
by VulDB Data Team • 08/31/2026
The vulnerability identified in TechStore version 1.0 represents a classic instance of reflected cross-site scripting within the contact display module. This flaw stems from an insecure handling of user-supplied input where the application fails to perform adequate sanitization or encoding before rendering data back to the client side. Specifically, when the id parameter is passed through HTTP requests and subsequently processed by the backend logic for the contact_display feature, the system directly injects this value into the HTML response without validating its content against a whitelist of safe characters or applying context-aware output encoding. This architectural oversight allows an attacker to craft malicious URLs containing embedded JavaScript payloads that are executed immediately upon loading in the victim's web browser environment.
From a technical perspective, the core issue lies in the absence of proper input validation and output encoding mechanisms at the point where dynamic content is rendered into the DOM. By echoing the id parameter verbatim, the application treats untrusted data as executable code rather than inert text. This behavior violates fundamental secure coding principles which dictate that all user inputs must be treated with suspicion until proven safe. The vulnerability falls under CWE-79, known as Improper Neutralization of Input During Web Page Generation, commonly referred to as Cross-site Scripting. It is categorized specifically as a reflected XSS attack because the malicious script is not stored on the server but rather executed directly from the current HTTP request, making it highly dependent on social engineering tactics such as phishing links to trigger execution against targeted users.
The operational impact of this vulnerability extends beyond simple code injection and poses significant risks to data integrity and confidentiality within the application ecosystem. Successful exploitation enables an attacker to execute arbitrary JavaScript in the context of the victim's session, effectively granting them the same privileges as a legitimate user. This capability can be leveraged for various malicious activities including stealing sensitive cookies or session tokens to hijack active sessions, performing unauthorized actions on behalf of the victim such as changing account settings or making purchases, and redirecting users to phishing sites designed to harvest credentials. Furthermore, persistent exploitation could lead to defacement of the user interface or installation of malware through drive-by download techniques if combined with other browser vulnerabilities.
To mitigate this vulnerability, immediate remediation steps must focus on implementing robust input validation and output encoding strategies. Developers should enforce strict whitelisting for the id parameter, ensuring it only accepts expected data types such as alphanumeric strings or specific integer formats while rejecting any special characters that could be interpreted as HTML tags or script delimiters. Additionally, applying context-aware output encoding is critical; this involves escaping special characters like ampersands, less-than signs, greater-than signs, and quotes based on the specific context in which they are rendered within the HTML structure. Implementing Content Security Policy headers can also provide an additional layer of defense by restricting the sources from which scripts can be loaded or executed, thereby mitigating the impact even if some injection attempts succeed. Regular security testing using static application security testing tools and manual penetration tests should be integrated into the development lifecycle to detect such flaws early before deployment.