Froxlor 2.3.6 authorization

Summaryinfo

A vulnerability was found in Froxlor 2.3.6. It has been classified as critical. Affected by this vulnerability is an unknown functionality. This manipulation causes authorization. This vulnerability is handled as CVE-2026-41235. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Froxlor 2.3.6 and classified as critical. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Froxlor is open source server administration software. Version 2.3.6 lets administrators configure `system.available_shells` as the approved shell list that customers may assign to FTP users. However, the server-side FTP account handlers do not enforce that whitelist when processing add or edit requests. As a result, an authenticated customer with shell delegation enabled can submit an arbitrary shell such as `/bin/bash` even when the panel UI only offers more restricted choices. In deployments that use the default `nssextrausers` integration, the attacker-controlled shell is then propagated into the system account database, leading to real host shell access. Version 2.3.7 fixes the issue.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-41235 since 04/18/2026. The exploitation appears to be easy. The attack can be launched remotely. Neither technical details nor an exploit are publicly available.

Upgrading to version 2.3.7 eliminates this vulnerability. The upgrade is hosted for download at github.com.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Froxlor

Version

• 2.3.6

License

• open-source

Website

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

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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