Finsys Dockhand up to 1.0.54 File-Browser Path Guard content path traversal

Summaryinfo

A vulnerability was found in Finsys Dockhand up to 1.0.54. It has been rated as very critical. Affected is an unknown function of the file /api/system/files/content of the component File-Browser Path Guard. This manipulation causes path traversal. This vulnerability is registered as CVE-2026-126321. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Finsys Dockhand up to 1.0.54 and classified as very critical. Affected by this vulnerability is an unknown function of the file /api/system/files/content of the component File-Browser Path Guard. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Dockhand before 1.0.55 contains a path traversal vulnerability that allows authenticated users with stacks:edit to bypass the file-browser path guard by combining symlinks with '..' sequences. Attackers can read /proc/self/environ, the SQLite database, and the encryption key via /api/system/files/content, or move them using the stack relocate endpoint, exposing stored credentials.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-126321 since 11/10/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation requires an enhanced level of successful authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/13/2026). MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 1.0.55 eliminates this vulnerability.

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Productinfo

Vendor

• Finsys

Name

• Dockhand

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.0.10
• 1.0.11
• 1.0.12
• 1.0.13
• 1.0.14
• 1.0.15
• 1.0.16
• 1.0.17
• 1.0.18
• 1.0.19
• 1.0.20
• 1.0.21
• 1.0.22
• 1.0.23
• 1.0.24
• 1.0.25
• 1.0.26
• 1.0.27
• 1.0.28
• 1.0.29
• 1.0.30
• 1.0.31
• 1.0.32
• 1.0.33
• 1.0.34
• 1.0.35
• 1.0.36
• 1.0.37
• 1.0.38
• 1.0.39
• 1.0.40
• 1.0.41
• 1.0.42
• 1.0.43
• 1.0.44
• 1.0.45
• 1.0.46
• 1.0.47
• 1.0.48
• 1.0.49
• 1.0.50
• 1.0.51
• 1.0.52
• 1.0.53
• 1.0.54

Website

• Product: https://github.com/Finsys/dockhand/

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