filebrowser up to 2.63.16 Paths DeleteWithPathPrefix path path traversal

Summaryinfo

A vulnerability was found in filebrowser up to 2.63.16. It has been rated as problematic. The affected element is the function DeleteWithPathPrefix of the component Paths. The manipulation of the argument path leads to path traversal. This vulnerability is uniquely identified as CVE-2026-61874. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in filebrowser up to 2.63.16. This issue affects the function DeleteWithPathPrefix of the component Paths. The manipulation of the argument path with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-23. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory. Impacted is confidentiality. The summary by CVE is:

filebrowser versions before 2.63.17 fail to normalize paths before querying the share index in DeleteWithPathPrefix, allowing authenticated users to leave stale public shares behind. Attackers can delete a shared directory using a trailing-slash path, then recreate the same directory to expose new contents through the dormant public share URL.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-61874 since 07/10/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 2.63.17 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-43234). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• filebrowser

Version

• 2.63.0
• 2.63.1
• 2.63.2
• 2.63.3
• 2.63.4
• 2.63.5
• 2.63.6
• 2.63.7
• 2.63.8
• 2.63.9
• 2.63.10
• 2.63.11
• 2.63.12
• 2.63.13
• 2.63.14
• 2.63.15
• 2.63.16

Website

• Product: https://github.com/filebrowser/filebrowser/

CPE 2.3info

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CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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