CVE-2006-5499 in Serendipity
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Serendipity (s9y) 1.0.1 and earlier allow remote attackers to inject arbitrary web script or HTML via unspecified vectors in the media manager administration page.
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Analysis
by VulDB Data Team • 04/25/2026
The vulnerability identified as CVE-2006-5499 represents a critical cross-site scripting flaw affecting Serendipity (s9y) version 1.0.1 and earlier. This issue resides within the media manager administration page, creating a significant security risk for web applications that utilize this content management system. The vulnerability allows remote attackers to execute malicious scripts within the context of a victim's browser, potentially compromising user sessions and data integrity. The unspecified vectors suggest that multiple attack paths exist within the media manager functionality, making the exploitation surface broader than initially apparent.
This vulnerability directly maps to CWE-79, which defines Cross-Site Scripting as a weakness that occurs when an application incorporates untrusted data into web pages without proper validation or escaping. The flaw specifically manifests in the administration interface where users can manage media files, creating an attack vector that could be exploited by malicious actors to inject arbitrary HTML or JavaScript code. The impact extends beyond simple script execution as it provides attackers with the ability to manipulate the content management system's administrative functions, potentially leading to unauthorized modifications or complete system compromise.
The operational impact of CVE-2006-5499 is substantial for organizations relying on Serendipity versions prior to 1.0.2, as it enables attackers to perform session hijacking, steal administrative credentials, or redirect users to malicious websites. The vulnerability's presence in the media manager interface means that any user with administrative privileges who visits the affected page could be compromised, potentially leading to unauthorized content modification, data theft, or complete system takeover. This type of vulnerability aligns with ATT&CK technique T1059.007, which covers scripting through web shells, and T1566.001, which encompasses social engineering via spearphishing with a malicious attachment, as attackers could leverage this vulnerability to establish persistent access.
The remediation strategy for this vulnerability requires immediate upgrading to Serendipity version 1.0.2 or later, which contains the necessary patches to address the XSS flaws in the media manager. Organizations should also implement input validation and output encoding measures to prevent similar vulnerabilities in other components of their web applications. Security teams should conduct comprehensive vulnerability assessments to identify any other potential XSS vectors within the application's codebase and ensure that all user inputs are properly sanitized before being processed or displayed. Additionally, implementing proper content security policies and regular security testing can help prevent the exploitation of similar vulnerabilities in the future.