CVE-2026-5953 in Web Design
Summary
by MITRE • 08/28/2026
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Ceviz Informatics Inc. Web Design allows Reflected XSS.
This issue affects Web Design: through 25082026.
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Analysis
by VulDB Data Team • 08/28/2026
The identified vulnerability represents a classic instance of improper neutralization of input during web page generation, commonly known as Cross-Site Scripting or XSS. Specifically, this is classified as a Reflected XSS flaw within the Web Design application developed by Ceviz Informatics Inc. In a reflected XSS attack, malicious script code provided by an attacker is immediately returned to the user's browser without being properly validated or sanitized by the server-side application. This differs from stored XSS where the payload is saved on the target server; here, the vulnerability relies on social engineering tactics such as phishing links that prompt users to visit a specially crafted URL containing the malicious script in query parameters or form fields. When the vulnerable web page processes this input and reflects it back into the HTML response without encoding special characters like angle brackets, quotes, or ampersands, the browser interprets the injected content as executable JavaScript rather than plain text data.
From a technical perspective, the root cause lies in the application's failure to implement adequate output encoding or context-aware escaping mechanisms before rendering user-supplied input into the DOM. This allows an attacker to inject arbitrary client-side scripts that execute within the security context of the vulnerable website. Because the script runs with the same privileges as legitimate site code, it can access sensitive cookies, session tokens, local storage data, and other protected resources associated with the domain. The impact is severe for end-users who interact with the malicious link, potentially leading to account hijacking, unauthorized actions performed on behalf of the victim, or redirection to phishing sites designed to steal credentials further.
This vulnerability maps directly to CWE-79: Improper Neutralization of Input During Web Page Generation in multiple contexts, which is a fundamental category for web application security flaws. In terms of offensive cybersecurity frameworks, this behavior aligns with MITRE ATT&CK technique T1059.007: Command and Scripting Interpreter via JavaScript, specifically within the context of client-side execution. The exploitation vector typically involves an attacker crafting a URL that includes script tags or event handlers such as onerror or onload attributes embedded in parameters like ?search= or ?id=. When the server echoes this input back into the HTML body without sanitization, the browser executes the payload immediately upon page load.
The operational impact extends beyond simple defacement or alert boxes. Attackers can leverage DOM manipulation to steal session cookies via document.cookie access, bypassing HttpOnly flags if other vectors exist or exploiting non-HttpOnly sessions entirely. They may also perform keylogging by injecting invisible input fields that capture keystrokes and exfiltrate them to a remote server using XMLHttpRequest or fetch API calls. Furthermore, the vulnerability can be used to deface the website's appearance for individual users or redirect traffic to malicious domains, damaging the reputation of Ceviz Informatics Inc. and eroding user trust in their Web Design platform.
Mitigation strategies must focus on strict input validation and robust output encoding. Developers should implement a whitelist approach for allowed characters rather than relying solely on blacklist filters which are prone to bypasses using obfuscation techniques. Crucially, all dynamic content inserted into HTML elements must be encoded according to the specific context: HTML entity encoding for text nodes, attribute value encoding for attributes, and JavaScript string escaping if data is embedded within script blocks. Utilizing modern web frameworks that automatically escape output by default can significantly reduce this risk. Additionally, implementing Content Security Policy headers with a strict nonce or hash-based policy can prevent unauthorized scripts from executing even if injection occurs, providing a critical layer of defense in depth against XSS attacks.