CVE-2007-0353 in myBloggie
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in (1) index.php and (2) login.php in myBloggie 2.1.5 allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO string.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 10/23/2025
The vulnerability described in CVE-2007-0353 represents a classic cross-site scripting flaw that affects the myBloggie 2.1.5 content management system. This vulnerability exists in two primary files: index.php and login.php, making it particularly dangerous as it impacts both the main blog interface and authentication mechanisms. The flaw specifically occurs when the application fails to properly sanitize input parameters derived from the PATH_INFO string, which is a server variable containing additional path information beyond the script name. This type of vulnerability falls under CWE-79, which specifically addresses cross-site scripting attacks where untrusted data is incorporated into web page content without proper validation or encoding.
The technical execution of this vulnerability relies on the application's improper handling of the PATH_INFO server variable, which is commonly used by web applications to process additional URL segments. When attackers craft malicious URLs that include specially crafted script tags or HTML content within the PATH_INFO parameter, the myBloggie application processes this input without adequate sanitization or output encoding. This allows attackers to inject arbitrary web scripts or HTML content that gets executed in the context of other users' browsers when they visit affected pages. The vulnerability's impact is particularly severe because it affects both the main index page and login functionality, potentially enabling attackers to steal session cookies, redirect users to malicious sites, or perform other malicious actions within the victim's browser context.
The operational impact of CVE-2007-0353 extends beyond simple data theft or defacement, as it represents a fundamental security failure in input validation and output encoding practices. Attackers can exploit this vulnerability to execute persistent XSS attacks that may persist across multiple user sessions, potentially compromising user accounts through session hijacking or credential theft. The attack surface is broadened by the fact that both index.php and login.php are affected, meaning that even users who successfully authenticate could be vulnerable to attacks that occur during their browsing session. This vulnerability aligns with ATT&CK technique T1566.001, which covers the use of malicious content in web applications, and represents a critical weakness in the application's defense-in-depth strategy. The vulnerability's persistence and potential for user impact make it a high-risk security issue that could enable attackers to establish a foothold within the application's user base.
Mitigation strategies for this vulnerability require immediate implementation of proper input validation and output encoding practices throughout the myBloggie application. The most effective approach involves sanitizing all input parameters, particularly those derived from server variables like PATH_INFO, before they are processed or displayed in web pages. This includes implementing proper HTML entity encoding for all dynamic content and employing Content Security Policy (CSP) headers to limit script execution. Additionally, developers should implement input validation that rejects or removes potentially malicious characters and patterns from URL parameters. The vulnerability's remediation aligns with security best practices outlined in OWASP Top 10 2021, specifically addressing the prevention of cross-site scripting vulnerabilities. Organizations should also consider implementing web application firewalls and monitoring for suspicious PATH_INFO patterns to detect potential exploitation attempts. Regular security audits and input validation testing should be conducted to prevent similar vulnerabilities from emerging in future versions of the application, as this represents a fundamental flaw in the application's security architecture that could be exploited by attackers with minimal technical expertise.