Vulnerability · Published Feb 9, 2026 · Assigned by GitHub_M
CVE-2026-25889File Browser has an Authentication Bypass in User Password Update
Medium 5.4
In plain English
A medium-severity security flaw in filebrowser from filebrowser. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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. Prior to 2.57.1, a case-sensitivity flaw in the password validation logic allows any authenticated user to change their password (or an admin to change any user's password) without providing the current password. By using Title Case field name "Password" instead of lowercase "password" in the API request, the current_password verification is completely bypassed. This enables account takeover if an attacker obtains a valid JWT token through XSS, session hijacking, or other means. This vulnerability is fixed in 2.57.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/filebrowser/filebrowser | no fix listed | GO-2026-4475 |
| Go | github.com/filebrowser/filebrowser/v2 | 2.57.1 | GHSA-hxw8-4h9j-hq2r |
| Go | github.com/filebrowser/filebrowser/v2 | 2.57.1 | GO-2026-4475 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| filebrowser | filebrowser | < 2.57.1 |
Weakness: CWE-178 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N