CVE-2006-1071 in DVguestbook
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in DVguestbook 1.2.2 allows remote attackers to inject arbitrary web script or HTML via the page parameter.
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Analysis
by VulDB Data Team • 10/10/2025
The CVE-2006-1071 vulnerability represents a classic cross-site scripting flaw in the DVguestbook 1.2.2 web application that exposes users to potential malicious code execution. This vulnerability specifically affects the index.php script where user input is not properly sanitized before being rendered back to web browsers. The vulnerability occurs when the page parameter is processed without adequate validation or encoding, allowing attackers to inject malicious scripts that execute in the context of other users' browsers. The affected application fails to implement proper input sanitization mechanisms, creating a direct pathway for attackers to exploit this weakness.
The technical implementation of this vulnerability aligns with CWE-79, which categorizes cross-site scripting as a code injection flaw where untrusted data is incorporated into web pages without proper validation or encoding. This particular flaw demonstrates how insufficient input validation can lead to severe security consequences, as the page parameter directly influences the content displayed to users. Attackers can craft malicious URLs containing script tags or other HTML elements that get executed when victims view the compromised page, potentially leading to session hijacking, credential theft, or redirection to malicious sites.
The operational impact of this vulnerability extends beyond simple script injection, as it can be leveraged to perform various malicious activities within the context of the vulnerable web application. An attacker could construct payloads that steal cookies, redirect users to phishing sites, or even modify content displayed to other users. The vulnerability affects the integrity and confidentiality of user sessions, potentially allowing unauthorized access to guestbook entries and user data. Given that this was a widespread issue in legacy web applications, it represents a common pattern of insecure input handling that has been documented extensively in web security literature and forms part of the attack patterns catalogued in the MITRE ATT&CK framework under the web application attack category.
Mitigation strategies for CVE-2006-1071 should focus on implementing proper input validation and output encoding mechanisms. The recommended approach involves sanitizing all user-supplied input through proper encoding before rendering it in web pages, specifically implementing HTML entity encoding for the page parameter. Additionally, developers should employ a whitelist approach for acceptable input values and implement Content Security Policy headers to limit script execution. Organizations should also consider upgrading from the vulnerable DVguestbook 1.2.2 version to a patched release or migrating to more modern guestbook solutions that follow secure coding practices and proper input validation protocols. The vulnerability underscores the critical importance of input sanitization and output encoding in preventing cross-site scripting attacks, which remain one of the most prevalent web application security risks according to OWASP Top Ten project classifications.