# CVE-2026-41235: Froxlor incorrect authorization in FTP shell assignment

Source: https://junglewise.ai/threats/cve-2026-41235-froxlor-incorrect-authorization-in-ftp-shell-assignment  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-04. Updated: 2026-06-04  
License: CC BY 4.0 with a link back

CVE-2026-41235 · Severity: high · CVSS 8.8 · Published 2026-06-04

Froxlor is an open-source server management panel used to administer web hosting environments. A security flaw allows customers with FTP access to bypass administrative restrictions and assign themselves a full system command shell (such as /bin/bash) even when the administrator has restricted them to limited options. This allows a low-privileged user to gain interactive access to the underlying server, potentially leading to data theft, service disruption, or further attacks on the hosting infrastructure.

Technologies: [Froxlor](https://junglewise.ai/threats/technologies/froxlor), [froxlor/froxlor (Packagist)](https://junglewise.ai/threats/technologies/froxlor-froxlor). Vendors: [Froxlor](https://junglewise.ai/threats/vendors/froxlor), [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2026-41235 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-41235 being exploited in the wild.

**How severe is CVE-2026-41235?** High severity, with a CVSS score of 8.8, published 4 June 2026.

**Which products and versions are affected?** Froxlor 2.3.6; froxlor/froxlor (Packagist) = 2.3.6, ECOSYSTEM:introduced=2.3.6,fixed=2.3.7.

**Is there a fix for CVE-2026-41235?** Yes. froxlor/froxlor (Packagist): upgrade to 2.3.7 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-41235 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-41235?** Check whether you run Froxlor or froxlor/froxlor (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- froxlor/froxlor (Packagist): upgrade to 2.3.7 or later

  ```sh
  composer require froxlor/froxlor:^2.3.7
  ```


## Technical details

An incorrect authorization vulnerability exists in Froxlor 2.3.6 due to missing server-side validation of the shell parameter in the Ftps.add and Ftps.update API handlers. While the web interface restricts shell selection based on the 'system.available_shells' configuration, the backend only performs generic string validation and does not check the input against the administrator-defined whitelist. In deployments using the default 'nssextrausers' integration, an authenticated customer with shell delegation enabled can submit a request with an arbitrary shell (e.g., /bin/bash). This value is then propagated by a root-owned cron task into the system's passwd database, granting the attacker interactive shell access to the host. The issue is resolved in version 2.3.7.

## Affected products

- Froxlor Froxlor 2.3.6

## Identifiers

- CVE-2026-41235
- GHSA-gcv3-5v9q-fmhh

## Timeline

- 2026-05-15: patched: Version 2.3.7 released
- 2026-05-29: advisory: GitHub Security Advisory published
- 2026-06-04: disclosed: CVE published to NVD

## References

- [https://github.com/froxlor/froxlor/releases/tag/2.3.7](https://github.com/froxlor/froxlor/releases/tag/2.3.7)
- [https://github.com/froxlor/froxlor/security/advisories/GHSA-gcv3-5v9q-fmhh](https://github.com/froxlor/froxlor/security/advisories/GHSA-gcv3-5v9q-fmhh)

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