Unrestricted File Upload Vulnerability in Chaty Pro by NotFound

CVE-2025-26776

What is CVE-2025-26776?

CVE-2025-26776 is a vulnerability found in the Chaty Pro plugin developed by NotFound, a tool designed to enhance communication on websites through various chat features. The vulnerability allows for unrestricted file uploads, which means that attackers can upload malicious files, such as web shells, to the web server hosting the application. This flaw poses a significant risk to organizations utilizing Chaty Pro, as it could enable unauthorized access and control over their web applications, leading to severe security incidents.

Technical Details

The vulnerability stems from improper validation of file uploads, allowing files with dangerous types to be uploaded without adequate restrictions. Affected versions include all prior to 3.3.3 of Chaty Pro, which indicates that any environment running these versions could potentially be exploited. The implications of this vulnerability are especially critical as it grants attackers the ability to execute arbitrary code on the server, thereby compromising built-in security measures.

Potential Impact of CVE-2025-26776

1. Unauthorized Access: The vulnerability allows attackers to upload malicious files, which can lead to unauthorized access to sensitive data and critical system functions, compromising the integrity of the web application.

2. Remote Code Execution: By utilizing a web shell or other malicious file, attackers can execute arbitrary code on the web server. This can facilitate a broad range of malicious activities, from data exfiltration to further infiltration of the organization's network.

3. Increased Risk of Data Breaches: The exploitation of this vulnerability could lead to significant data breaches, particularly in environments that rely heavily on Chaty Pro for customer interactions. This could have serious implications for both the organization’s reputation and compliance with data protection regulations.

References