CVE-2026-25890
8.1 · HIGHOverview
CVE-2026-25890 is a high-severity vulnerability affecting filebrowser filebrowser. It was published on February 9, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from filebrowser. Update filebrowser to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| filebrowser | filebrowser | >= 0, < 2.57.1 | Affected |
Frequently Asked Questions
What is CVE-2026-25890?
CVE-2026-25890 is a high-severity vulnerability affecting filebrowser filebrowser. It was published on February 9, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2026-25890?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-25890?
Check the references section for vendor advisories and patches from filebrowser. Update filebrowser to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-25890?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-25890 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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