CVE-2006-5770 in ac4p Mobile
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in ac4p Mobile allow remote attackers to inject arbitrary web script or HTML via (1) Bloks, (2) Newnews, (3) lBlok, and (4) foooot parameter in (a) index.php; Newnews, (5) newmsgs, and Bloks parameter in (b) MobileNews.php; Newnews parameter in (c) polls.php; (6) cats parameter in (d) send.php; (7) footer parameter in (e) up.php; and (8) pagenav parameter in (f) cp/index.php.
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Analysis
by VulDB Data Team • 04/26/2026
The CVE-2006-5770 vulnerability represents a critical cross-site scripting flaw in the ac4p Mobile application, a web-based content management system designed for mobile environments. This vulnerability affects multiple parameters across several PHP scripts, creating a widespread attack surface that allows remote attackers to execute malicious scripts in the context of authenticated users' browsers. The flaw stems from insufficient input validation and output sanitization mechanisms within the application's parameter handling logic, specifically targeting parameters such as Bloks, Newnews, lBlok, foooot, newmsgs, newmsgs, cats, footer, and pagenav across various script files including index.php, MobileNews.php, polls.php, send.php, up.php, and cp/index.php.
The technical implementation of this vulnerability follows the classic XSS attack pattern where user-supplied input is directly incorporated into web page output without proper sanitization or encoding. When an attacker crafts malicious payloads and submits them through any of the vulnerable parameters, the application fails to validate or escape the input before rendering it in the browser context. This allows attackers to inject arbitrary HTML and JavaScript code that executes in the victim's browser session, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The vulnerability is particularly concerning because it affects core navigation and content management parameters that are frequently used within the mobile application's interface, making exploitation relatively straightforward and impactful.
From an operational impact perspective, this vulnerability creates significant security risks for organizations using the ac4p Mobile platform. Attackers can leverage these XSS flaws to establish persistent malicious presence within the application's user base, potentially compromising user sessions and accessing sensitive data. The vulnerability's scope across multiple PHP scripts and parameters increases the attack surface considerably, making it difficult for administrators to fully remediate the issue through simple parameter filtering. The affected parameters span across different functional areas including news management, user messaging, content categories, and administrative controls, meaning that successful exploitation could lead to comprehensive system compromise. This vulnerability directly aligns with CWE-79 which classifies cross-site scripting as a critical weakness in web applications, and maps to ATT&CK technique T1566.001 for initial access through malicious web content.
The remediation approach for CVE-2006-5770 requires comprehensive input validation and output encoding across all affected parameters and scripts. Organizations should implement strict parameter validation that rejects or sanitizes potentially malicious input before processing, particularly for HTML and JavaScript content. The application must employ proper output encoding mechanisms that ensure any user-supplied content is rendered safely in the browser context, utilizing techniques such as HTML entity encoding or context-appropriate escaping. Security patches should focus on the specific parameter handling within index.php, MobileNews.php, polls.php, send.php, up.php, and cp/index.php files, ensuring that all user-provided input undergoes proper sanitization before being incorporated into dynamic web content. Additionally, implementing Content Security Policy headers and regular security code reviews can help prevent similar vulnerabilities from emerging in future development cycles.