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Filebrowser CVE-2026-25890

HIGH
Use of Incorrectly-Resolved Name or Reference (CWE-706)
2026-02-09 security-advisories@github.com GHSA-4mh3-h929-w968
Authentication Bypass Filebrowser Suse
8.1
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
8.1 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
SUSE
HIGH
qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

4
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Feb 20, 2026 - 20:31 vuln.today
Public exploit code
Patch released
Feb 20, 2026 - 20:31 nvd
Patch available
CVE Published
Feb 09, 2026 - 22:16 nvd
HIGH 8.1

DescriptionGitHub 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, 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.

AnalysisAI

Path normalization bypass in Filebrowser prior to 2.57.1 allows authenticated users to circumvent file access restrictions by injecting multiple slashes into request URLs, enabling unauthorized access to files designated as restricted. The vulnerability exploits a mismatch between the authorization validation logic and filesystem path resolution, affecting users running vulnerable versions. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate as regular user
Exploit
Craft URL with double slashes in path
Execution
Bypass authorization rules
Impact
Access restricted files outside allowed directory
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Vulnerability AssessmentAI

Exploitation Authenticated user account required. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 8.1 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker without authentication could exploit this vulnerability to compromise the affected system.
Remediation A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all systems running File Browser versions prior to 2.57.1 and assess which contain sensitive data. …

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Vendor StatusVendor

SUSE

Severity: High
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CVE-2026-25890 vulnerability details – vuln.today
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