CVE-2026-28114 is a critical vulnerability with a CVSS score of 9.1, affecting the firassaidi WooCommerce License Manager. This vulnerability allows for an unrestricted upload of files with dangerous types, potentially enabling attackers to upload a web shell to the web server. This issue is particularly severe for versions of WooCommerce License Manager from n/a through 7.0.6.
The risk to organizations includes significant impacts on confidentiality, integrity, and availability due to the potential for remote code execution. Attackers may leverage this vulnerability to gain unauthorized access to sensitive data or disrupt services, making it imperative for affected organizations to take immediate action.
As of now, the vulnerability status is marked as deferred, and there are no known exploits available. However, the critical nature of this vulnerability necessitates that organizations prioritize patching immediately to prevent potential exploitation.
In light of the severity of this vulnerability, organizations using the WooCommerce License Manager must schedule remediation promptly to mitigate the associated risks.
Vulnerability Details
The vulnerability stems from an unrestricted file upload capability within the WooCommerce License Manager plugin. Specifically, it allows users with high privileges to upload files without adequate validation, leading to the possibility of uploading malicious files such as web shells.
This vulnerability has been classified under CWE-434, which indicates a lack of proper restrictions on file uploads. The CVSS score of 9.1 highlights the critical nature of this issue, emphasizing that the attack vector is network-based, with low complexity, and requires high privileges but no user interaction.
The vulnerability was published on March 5, 2026, and its last modification was on April 22, 2026. Organizations using affected versions of the WooCommerce License Manager must take immediate action to mitigate this risk.
Technical Analysis
The root cause of this vulnerability lies in the inadequate validation of file uploads. The plugin does not enforce strict content-type checks or file extension validations, allowing attackers to manipulate the upload process. The attack vector is primarily network-based, meaning that an attacker can exploit this vulnerability remotely.
Given that the attack complexity is low, an attacker with high privileges can exploit this vulnerability without any required user interaction. The potential impacts of this vulnerability are severe, with high confidentiality, integrity, and availability impact scores, indicating that successful exploitation could lead to unauthorized access, data loss, or service disruption.
Risk & Impact Analysis
Organizations face significant risks due to the potential for unauthorized access and data breaches. The blast radius is wide, especially for those using the affected versions of the WooCommerce License Manager. The urgency for organizations is underscored by the critical CVSS score and the potential for severe consequences if this vulnerability is exploited.
Given the vulnerability's characteristics and the potential for exploitation, organizations should address this issue in their priority patch cycle. Failure to do so could result in significant operational and reputational damage.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of the WooCommerce License Manager plugin through version 7.0.6. Organizations should ensure they are not using these versions or apply available patches as soon as possible.
Mitigation & Remediation
To mitigate this vulnerability, organizations should apply the latest updates to the WooCommerce License Manager. If patches are unavailable, consider implementing strict file upload controls and monitoring uploads for suspicious activity. Additionally, organizations should regularly engage in penetration testing to validate their security posture.
Detection Guidance
Organizations should monitor logs for unusual patterns indicating file upload attempts, especially for extensions commonly associated with web shells. Additionally, monitoring for unexpected changes in file permissions or newly created files can help detect exploitation attempts.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-28114 highlights the ongoing trend of file upload vulnerabilities within web applications. Organizations should learn from this incident by implementing robust input validation and file handling practices to prevent similar vulnerabilities in the future. Security teams are encouraged to adopt proactive measures, such as conducting regular security assessments and engaging with the security community to stay informed about emerging threats.
For further insights on vulnerability management, organizations can refer to our vulnerability management program resources and enhance their security strategy.
In addition, understanding the importance of penetration testing methodology can help organizations better prepare for potential vulnerabilities and improve their overall security posture.
Lastly, engaging in AI security best practices can further enhance an organization's defenses against evolving threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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