CVE-2025-53893: File Browser Vulnerable to Uncontrolled Memory Consumption Due to Oversized File Processing
Description
File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename, and edit files. In version 2.38.0, a Denial of Service (DoS) vulnerability exists in the file processing logic when reading a file on endpoint `Filebrowser-Server-IP:PORT/files/{file-name}` . While the server correctly handles and stores uploaded files, it attempts to load the entire content into memory during read operations without size checks or resource limits. This allows an authenticated user to upload a large file and trigger uncontrolled memory consumption on read, potentially crashing the server and making it unresponsive. As of time of publication, no known patches are available.
Classification
CVE ID: CVE-2025-53893
CVSS Base Severity: HIGH
CVSS Base Score: 7.7
CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
Problem Types
CWE-400: Uncontrolled Resource Consumption CWE-789: Memory Allocation with Excessive Size ValueAffected Products
Vendor: filebrowser
Product: filebrowser
References
https://nvd.nist.gov/vuln/detail/CVE-2025-53893https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7xqm-7738-642x
https://github.com/filebrowser/filebrowser/issues/5294