CVE-2026-41235
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.
- Score
- CVSS 4.0 8.6 High
- Status
- Deferred - security-advisories@github.com
- Published
- 2026-06-04
- Last modified
- 2026-06-08
- Weaknesses
- CWE-863
Affected products
References
- https://github.com/froxlor/froxlor/releases/tag/2.3.7
- https://github.com/froxlor/froxlor/security/advisories/GHSA-gcv3-5v9q-fmhh
