CVE-2024-29271 in VvvebJs
Summary
by MITRE • 03/22/2024
Reflected Cross-Site Scripting (XSS) vulnerability in VvvebJs before version 1.7.7, allows remote attackers to execute arbitrary code and obtain sensitive information via the action parameter in save.php.
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Analysis
by VulDB Data Team • 04/13/2025
The vulnerability identified as CVE-2024-29271 represents a critical reflected cross-site scripting flaw within the VvvebJs JavaScript framework prior to version 1.7.7. This security weakness resides in the framework's handling of user input through the action parameter within the save.php endpoint, creating a pathway for malicious actors to inject and execute arbitrary code within the context of affected web applications. The vulnerability classification aligns with CWE-79 which specifically addresses cross-site scripting attacks where untrusted data is incorporated into web pages without proper validation or sanitization. The reflected nature of this vulnerability means that malicious input is immediately reflected back to the user without being stored, making it particularly dangerous for targeted attacks.
The technical implementation of this flaw occurs when the action parameter in save.php fails to properly sanitize or validate incoming user data before processing. Attackers can craft malicious payloads that, when executed, will be reflected back to other users who visit the affected page, potentially leading to session hijacking, credential theft, or unauthorized administrative actions. The vulnerability's exploitation requires minimal user interaction as the malicious script is executed automatically when the victim accesses the compromised page. This type of attack pattern is consistent with ATT&CK technique T1566.001 which focuses on spearphishing attachments, where the reflected XSS serves as the initial compromise vector for more sophisticated attacks.
The operational impact of this vulnerability extends beyond simple script execution as it can enable attackers to bypass security controls that rely on proper input validation. When an attacker successfully exploits this vulnerability, they can potentially access sensitive information, manipulate user sessions, or redirect victims to malicious websites. The attack surface is particularly concerning given that VvvebJs is a JavaScript framework commonly used in web development environments, meaning that numerous applications could be potentially vulnerable. Organizations using affected versions of this framework face significant risk of data breaches, as reflected XSS attacks can be used to steal session cookies, redirect users to phishing sites, or inject malicious code that persists across user sessions.
Mitigation strategies for CVE-2024-29271 should prioritize immediate patching of all affected systems to version 1.7.7 or later, as this represents the most effective solution to address the root cause of the vulnerability. Additionally, organizations should implement comprehensive input validation and output encoding mechanisms to prevent similar issues in other components of their web applications. The implementation of Content Security Policy headers can provide an additional layer of protection by restricting the sources from which scripts can be executed. Security monitoring should be enhanced to detect anomalous patterns in user agent strings or unusual parameter values that might indicate attempted exploitation. Regular security assessments and code reviews should be conducted to identify and remediate similar vulnerabilities in other parts of the application stack. Organizations should also consider implementing web application firewalls to detect and block malicious payloads targeting reflected XSS vulnerabilities, though this should not replace proper code-level fixes. The vulnerability demonstrates the critical importance of maintaining up-to-date dependencies and implementing robust security practices throughout the software development lifecycle.