CVE-2024-49313 in VKontakte Wall Post Plugin
Summary
by MITRE • 10/17/2024
Cross-Site Request Forgery (CSRF) vulnerability in rudestan VKontakte Wall Post vkontakte-wall-post allows Stored XSS.This issue affects VKontakte Wall Post: from n/a through <= 2.0.
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Analysis
by VulDB Data Team • 04/06/2026
This vulnerability represents a critical security flaw in the rudestan VKontakte Wall Post plugin, specifically within the vkontakte-wall-post component where cross-site request forgery permits stored cross-site scripting attacks. The vulnerability exists in versions prior to and including 2.0, creating a persistent threat vector that can be exploited by malicious actors to execute arbitrary JavaScript code within the context of authenticated users. The flaw stems from inadequate validation and sanitization of user input that flows into the plugin's storage mechanisms, allowing attackers to inject malicious payloads that persist across sessions and user interactions.
The technical implementation of this vulnerability demonstrates a classic stored XSS attack pattern where the CSRF protection mechanisms fail to validate the authenticity of requests, enabling unauthorized modifications to the plugin's data storage. When users interact with the affected plugin, their browsers execute the malicious scripts embedded in the stored content, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of authenticated users. This type of vulnerability typically occurs when the application fails to implement proper anti-CSRF tokens or when the token validation is bypassed during data persistence operations.
The operational impact of this vulnerability extends beyond simple script execution, as it creates a persistent backdoor within the affected systems. Attackers can leverage this flaw to establish long-term access to user accounts, manipulate content, or redirect users to malicious domains. The stored nature of the XSS payload means that every user who views the affected content becomes a potential victim, amplifying the attack scope and making it particularly dangerous for social media plugins that are frequently accessed by multiple users. This vulnerability directly maps to CWE-352, which defines Cross-Site Request Forgery, and CWE-79, which addresses Cross-Site Scripting, with the combination creating a particularly severe threat vector.
Security professionals should implement immediate mitigations including the deployment of proper anti-CSRF token mechanisms, comprehensive input sanitization, and output encoding for all user-provided content. The plugin should enforce strict validation of all incoming requests and implement proper session management controls to prevent unauthorized modifications. Additionally, organizations should conduct thorough code reviews to identify similar patterns and ensure that all data storage operations include appropriate security controls. This vulnerability aligns with ATT&CK technique T1566, which covers Phishing, and T1059, which covers Command and Scripting Interpreter, as it enables attackers to execute malicious code through compromised user sessions. The remediation approach should include upgrading to the patched version of the plugin, implementing web application firewalls, and conducting regular security assessments to identify similar vulnerabilities in other components.