Information Exposure Affecting filebrowser package, versions <2.56.0-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-WOLFILATEST-FILEBROWSER-15384036
- published4 Mar 2026
- disclosed19 Jan 2026
Introduced: 19 Jan 2026
CVE-2026-23849 (opens in a new tab)How to fix?
Upgrade Wolfi filebrowser to version 2.56.0-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream filebrowser package and not the filebrowser package as distributed by Wolfi.
See How to fix? for Wolfi relevant fixed versions and status.
File Browser provides a file managing interface within a specified directory and can be used to upload, delete, preview, rename, and edit files. Prior to version 2.55.0, the JSONAuth. Auth function contains a logic flaw that allows unauthenticated attackers to enumerate valid usernames by measuring the response time of the /api/login endpoint. The vulnerability exists due to a "short-circuit" evaluation in the authentication logic. When a username is not found in the database, the function returns immediately. However, if the username does exist, the code proceeds to verify the password using bcrypt (users.CheckPwd), which is a computationally expensive operation designed to be slow. This difference in execution path creates a measurable timing discrepancy. Version 2.55.0 contains a patch for the issue.