filebrowser up to 2.57.1 name resolution

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.0$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in filebrowser up to 2.57.1. Affected is an unknown function. Performing a manipulation results in name resolution. This vulnerability is cataloged as CVE-2026-25890. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in filebrowser up to 2.57.1. This affects an unknown code. The manipulation with an unknown input leads to a name resolution vulnerability. CWE is classifying the issue as CWE-706. The product uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-25890 since 02/06/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available.

Upgrading to version 2.57.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 489af403a19057f6b6b4b1dc0e48cbb26a202ef9 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.1
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Name resolution
CWE: CWE-706
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: filebrowser 2.57.2
Patch: 489af403a19057f6b6b4b1dc0e48cbb26a202ef9

Timelineinfo

02/06/2026 CVE reserved
02/10/2026 +4 days Advisory disclosed
02/10/2026 +0 days VulDB entry created
02/21/2026 +11 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-4mh3-h929-w968
Status: Confirmed

CVE: CVE-2026-25890 (🔒)
GCVE (CVE): GCVE-0-2026-25890
GCVE (VulDB): GCVE-100-345069

Entryinfo

Created: 02/10/2026 03:20
Updated: 02/21/2026 10:00
Changes: 02/10/2026 03:20 (65), 02/21/2026 10:00 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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