CVE-2026-25890
published 2026-02-09CVE-2026-25890: 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…
PriorityP356high8.1CVSS 3.1
AVNACLPRLUINSUCHIHAN
EPSS
0.46%
36.6th percentile
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, an authenticated user can bypass the application's "Disallow" file path rules by modifying the request URL. By adding multiple slashes (e.g., //private/) to the path, the authorization check fails to match the rule, while the underlying filesystem resolves the path correctly, granting unauthorized access to restricted files. This vulnerability is fixed in 2.57.1.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| filebrowser | filebrowser | < 2.57.2 | 2.57.2 |
| filebrowser | filebrowser | < 2.57.1 | 2.57.1 |
| github.com | filebrowser_filebrowser_v2 | >= 0 < 2.57.1 | 2.57.1 |
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OSV
File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL in github.com/filebrowser/filebrowser
osv·2026-02-17
CVE-2026-25890 File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL in github.com/filebrowser/filebrowser
File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL in github.com/filebrowser/filebrowser
File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL in github.com/filebrowser/filebrowser
GHSA
File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL
ghsa·2026-02-10
CVE-2026-25890 [HIGH] CWE-706 File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL
File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL
### Summary
An authenticated user can bypass the application's "Disallow" file path rules by modifying the request URL. By adding multiple slashes (e.g., //private/) to the path, the authorization check fails to match the rule, while the underlying filesystem resolves the path correctly, granting unauthorized access to restricted files.
### Details
The vulnerability allows users to bypass "Disallow" rules defined by administrators.
The issue stems from how the application handles URL path normalization and rule matching:
1. Router Configuration: The router in `http/http.go` is configured with `r.SkipClean(true)`. This prevents the automatic collapse of multiple slashes (e.g., // becoming /) before t
OSV
File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL
osv·2026-02-10
CVE-2026-25890 [HIGH] File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL
File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL
### Summary
An authenticated user can bypass the application's "Disallow" file path rules by modifying the request URL. By adding multiple slashes (e.g., //private/) to the path, the authorization check fails to match the rule, while the underlying filesystem resolves the path correctly, granting unauthorized access to restricted files.
### Details
The vulnerability allows users to bypass "Disallow" rules defined by administrators.
The issue stems from how the application handles URL path normalization and rule matching:
1. Router Configuration: The router in `http/http.go` is configured with `r.SkipClean(true)`. This prevents the automatic collapse of multiple slashes (e.g., // becoming /) before t
No detection rules found.
No public exploits indexed.
2026-02-09
Published