Filebrowser
CVE-2026-25889
MEDIUM
GHSA-hxw8-4h9j-hq2r
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Case sensitivity handling
|
| Impact | CVSS 5.4 (MEDIUM). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitation requires authentication. Public exploit/POC available. |
| Exploit ScenarioDerived | An attacker (requires authentication) could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Filebrowser versions prior to 2.57.1 allow authenticated users to reset passwords without verifying the current password due to case-sensitive validation logic that can be bypassed using mixed-case field names in API requests. An attacker with a valid JWT token obtained through XSS, session hijacking, or similar means could exploit this to perform account takeover. Public exploit code exists for this vulnerability, and a patch is available.
Earlier versions of this analysis (1)
File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. [CVSS 5.4 MEDIUM]
RemediationAI
A vendor patch is available — apply it immediately. Fixed in version 2.57.1.. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 2 packages in go
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Affects Filebrowser. 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 completel
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Primary rating from GitHub Advisory.
CVSS VectorGitHub Advisory
Lifecycle Timeline
3DescriptionGitHub Advisory
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.
Executive ViewAI
CVE-2026-25889 presents moderate security risk rated CVSS 5.4. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available. A patch is available and should be applied during regular vulnerability management.
Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.
Affected Products (CPE)GitHub Advisory
More in Filebrowser
View allUnauthorized file operations in File Browser before fix. PoC and patch available.
A cross-site scripting (XSS) vulnerability in FileBrowser before v2.23.0 allows an authenticated attacker to escalate pr
Symlink-following read paths in FileBrowser Quantum serve files from outside a user's assigned scope: download, preview,
Recursive operation authorization bypass in File Browser before v2.63.22 permits any authenticated user to copy, rename,
Path normalization bypass in Filebrowser prior to 2.57.1 allows authenticated users to circumvent file access restrictio
File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, previ
File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, previ
File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, previ
Arbitrary file read in FileBrowser Quantum (gtsteffaniak/filebrowser) before 1.4.3-beta lets any authenticated user, reg
File Browser versions 2.50.0 through 2.63.21 permit indefinite session persistence via expired JWT tokens when proxy aut
File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, previ
Arbitrary file deletion in filebrowser before 2.63.19 allows authenticated users holding only Create permission to delet
Same weakness CWE-178 – Improper Handling of Case Sensitivity
View allVendor StatusVendor
SUSE
Severity: Medium| Product | Status |
|---|---|
| openSUSE Leap 15.6 | Fixed |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | Fixed |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | Fixed |
| openSUSE Leap 15.5 | Fixed |
Exploit-DB