The FormCraft plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG File uploads in all versions up to, and including, 3.9.11 due to insufficient input sanitization and output escaping. This vulnerability allows unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses the SVG file. With a CVSS score of 7.2, this vulnerability is classified as high severity, highlighting the potential risks associated with its exploitation.
Risk to organizations includes unauthorized access to sensitive information and the potential for malicious actions performed in the context of legitimate users. Attackers may leverage this vulnerability to execute scripts that could lead to data theft, defacement, or further compromise of the affected system. Organizations should prioritize patching immediately.
The exploitation status of this vulnerability is currently not known to have any public exploits available. However, given the nature of the flaw, it is crucial for organizations using this plugin to assess their exposure and take action to remediate the issue.
Given the potential impact, organizations should address this vulnerability in their priority patch cycle to mitigate risks and maintain the integrity of their web applications.
Vulnerability Details
The FormCraft plugin for WordPress is vulnerable to Stored Cross-Site Scripting due to insufficient input sanitization and output escaping when handling SVG file uploads. The vulnerability allows attackers to inject arbitrary web scripts. The CVSS 3.1 score of 7.2 indicates a high severity level, with an attack vector classified as network-based and a low attack complexity.
The affected product is the FormCraft plugin by ncrafts, and the vulnerability was disclosed on February 18, 2025. It is categorized under CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')).
Technical Analysis
The root cause of this vulnerability lies in the lack of proper input sanitization and output escaping for SVG file uploads. Attackers can exploit this flaw by uploading malicious SVG files that contain embedded scripts. When these files are accessed by users, the scripts are executed in their browsers, leading to potential data theft and session hijacking.
The attack vector is network-based, meaning that an attacker needs to have network access to the vulnerable application to upload a malicious file. The attack complexity is low, as there are no special privileges required and no user interaction is needed for the attack to succeed.
The impact on confidentiality and integrity is classified as low, while availability is not affected. This means that while the information may be compromised, the system remains operational.
Risk & Impact Analysis
The real-world risk associated with this vulnerability is significant, as it allows for the injection of malicious scripts that can compromise user data and the integrity of the website. The blast radius is considerable, affecting all users accessing the SVG files. Organizations must understand that the impact of such an attack can lead to severe reputational damage and financial loss.
Given the CVSS score of 7.2, organizations should schedule remediation as a high priority. Monitoring and detection strategies should also be implemented to identify any exploitation attempts.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of the FormCraft plugin up to and including 3.9.11 are affected. Users are strongly advised to update to the latest version as soon as possible to mitigate this vulnerability.
Mitigation & Remediation
To address this vulnerability, organizations should apply the latest patch for the FormCraft plugin. If a patch is unavailable, consider implementing workarounds such as disabling SVG file uploads or employing stricter input validation on uploaded files.
Organizations should also implement configuration hardening techniques, such as properly configuring user permissions and monitoring uploads for any malicious content. For further guidance on securing web applications, organizations can refer to our comprehensive application security assessment.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual activity related to SVG file uploads and access. Behavioral anomalies, such as unexpected script execution in user sessions, should also be tracked.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its demonstration of the risks associated with inadequate input validation in web applications. The increasing prevalence of web-based attacks necessitates a proactive approach to application security.
Security teams should use this incident as a lesson to strengthen their security posture against similar vulnerabilities. Regular security assessments, including penetration testing, can help identify potential weaknesses before they are exploited.
As the threat landscape evolves, it is critical for organizations to remain vigilant and implement comprehensive security measures to protect their applications from sophisticated attacks.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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