Path Traversal Vulnerability in FileBrowser Quantum by GT Steffaniak
CVE-2026-54910

7.7HIGH

Key Information:

Vendor

Gtsteffaniak

Status
Filebrowser
Vendor
CVE Published:
20 July 2026

What is CVE-2026-54910?

FileBrowser Quantum, a self-hosted web-based file manager, contains a path traversal vulnerability due to insufficient sanitization of user-controlled query parameters in the subtitlesHandler endpoint. This issue allows authenticated users to manipulate the path and name parameters to access arbitrary files on the server, including sensitive files like system configurations and credential data. The vulnerability has been addressed in version 1.4.3-beta, which implements proper sanitization measures.

Affected Version(s)

filebrowser < 1.4.3-beta

References

https://github.com/gtsteffaniak/filebrowser/security/advi...
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https://github.com/gtsteffaniak/filebrowser/commit/f3f4bb...
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CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.