CVE-2021-47906 in BloofoxCMS
Summary
by MITRE • 01/23/2026
BloofoxCMS 0.5.2.1 contains a stored cross-site scripting vulnerability in the articles text parameter that allows authenticated attackers to inject malicious scripts. Attackers can insert malicious javascript payloads in the text field to execute scripts and potentially steal authenticated users' cookies.
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Analysis
by VulDB Data Team • 01/24/2026
BloofoxCMS version 0.5.2.1 suffers from a critical stored cross-site scripting vulnerability that resides within the articles text parameter handling functionality. This vulnerability represents a significant security flaw that enables authenticated attackers to inject malicious javascript code into the application's content management system. The flaw specifically affects how the system processes and stores user input in the text field of articles, creating an environment where attacker-controlled payloads can persist and execute within the application's interface. The vulnerability operates at the application layer and requires authentication to exploit, making it particularly dangerous as it can leverage legitimate user sessions to execute unauthorized actions.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding mechanisms within the article creation and editing workflows. When authenticated users submit content containing malicious javascript code in the text parameter, the system fails to properly sanitize or escape the input before storing it in the database. This stored payload then executes whenever other users view the affected article, creating a persistent threat vector that can affect multiple users over time. The vulnerability directly maps to CWE-79 which defines cross-site scripting flaws as weaknesses that occur when an application includes untrusted data in web pages without proper validation or escaping. The flaw demonstrates a classic stored XSS pattern where malicious input is first stored by the application and then subsequently executed in the context of other users' browsers.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with the capability to steal authenticated users' session cookies and potentially escalate privileges within the application. An attacker can craft malicious payloads that redirect users to phishing pages, steal sensitive information, or even perform actions on behalf of authenticated users. The stored nature of the vulnerability means that the malicious code persists even after the initial injection, allowing for prolonged exploitation periods. This creates a significant risk for organizations relying on BloofoxCMS for content management, as compromised user sessions can lead to full account takeovers, data exfiltration, and unauthorized modifications to published content. The vulnerability affects the application's integrity and confidentiality, potentially compromising the entire content management ecosystem.
Organizations using BloofoxCMS 0.5.2.1 should implement immediate mitigations including input sanitization and output encoding controls to prevent malicious scripts from being stored or executed. The recommended approach involves implementing strict content validation that filters out or escapes potentially dangerous characters and javascript constructs before storing user input. Additionally, implementing proper output encoding when displaying stored content ensures that any malicious code is rendered harmless in the browser context. Security headers such as Content Security Policy should be configured to limit script execution capabilities and prevent unauthorized code injection. The mitigation strategy should also include regular security updates and patches from the vendor, as well as monitoring for suspicious content submissions. Organizations should consider implementing web application firewalls to detect and block common XSS attack patterns, and conduct regular security assessments to identify similar vulnerabilities within their content management infrastructure. This vulnerability aligns with ATT&CK technique T1566 which describes social engineering tactics involving the delivery of malicious content through web applications, making it particularly relevant for organizations implementing comprehensive threat detection and response strategies.