High severityNVD Advisory· Published Feb 9, 2026· Updated Feb 10, 2026
File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL
CVE-2026-25890
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, 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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/filebrowser/filebrowser/v2Go | < 2.57.1 | 2.57.1 |
Affected products
7- osv-coords6 versionspkg:apk/chainguard/filebrowserpkg:apk/chainguard/filebrowser-compatpkg:apk/wolfi/filebrowserpkg:apk/wolfi/filebrowser-compatpkg:golang/github.com/filebrowser/filebrowser/v2pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2015.6
< 2.59.0-r0+ 5 more
- (no CPE)range: < 2.59.0-r0
- (no CPE)range: < 2.59.0-r0
- (no CPE)range: < 2.59.0-r0
- (no CPE)range: < 2.59.0-r0
- (no CPE)range: < 2.57.1
- (no CPE)range: < 0.0.20260226T182644-150000.1.149.1
- Range: < 2.57.2
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-4mh3-h929-w968ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-25890ghsaADVISORY
- github.com/filebrowser/filebrowser/commit/489af403a19057f6b6b4b1dc0e48cbb26a202ef9ghsax_refsource_MISCWEB
- github.com/filebrowser/filebrowser/releases/tag/v2.57.1ghsax_refsource_MISCWEB
- github.com/filebrowser/filebrowser/security/advisories/GHSA-4mh3-h929-w968ghsax_refsource_CONFIRMWEB
News mentions
0No linked articles in our index yet.