CVE-2026-3418: Arbitrary File Upload via System REST API in Multiple WSO2 Products Allows Remote Code Execution
The System REST API accepts user-supplied file uploads without enforcing sufficient validation on the file type or destination, allowing files to be written to arbitrary server-accessible locations. Exploitation requires authenticated administrative access with publisher privileges.
Successful exploitation permits an authenticated publisher to upload files to server-accessible locations. Depending on the deployment environment and how uploaded files are handled, this could lead to the execution of uploaded content, potentially resulting in remote code execution.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-3418?
The severity of CVE-2026-3418 is rated as critical with a score of 9.1.
How do I fix CVE-2026-3418?
To fix CVE-2026-3418, ensure that file upload functionalities validate file types and restrict file writing locations.
What impact does CVE-2026-3418 have?
CVE-2026-3418 allows for arbitrary file uploads, potentially leading to remote code execution on the server.
What are the prerequisites for exploiting CVE-2026-3418?
Exploitation of CVE-2026-3418 requires authenticated administrative access with publisher privileges.
Which products are affected by CVE-2026-3418?
CVE-2026-3418 affects multiple WSO2 products that utilize the System REST API.