Resource exhaustion in Filebrowser
CVE-2025-53893
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (26.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Filebrowser — versions 2.38.0, = 2.38.0
Weakness classification (CWE)
References
- github.com/filebrowser/filebrowser/security/advisories/GHSA-7xqm-7738-642x (Exploit, Vendor Advisory)
- github.com/filebrowser/filebrowser/issues/5294 (Issue Tracking)
Frequently asked questions
- What is CVE-2025-53893?
- CVE-2025-53893 is a medium-severity vulnerability in Filebrowser, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2025-07-15.
- How severe is CVE-2025-53893?
- Medium severity. CVSS v3 base score is 6.5 out of 10.