Cloudanix VulnDB

CVE-2026-41228

Critical · 9.9

CVSS

9.9

EPSS

0.7%

Published

Apr 23, 2026

CISA due date

—

The record

Froxlor is open source server administration software. Prior to version 2.3.6, the Froxlor API endpoint `Customers.update` (and `Admins.update`) does not validate the `def_language` parameter against the list of available language files. An authenticated customer can set `def_language` to a path traversal payload (e.g., `../../../../../var/customers/webs/customer1/evil`), which is stored in the database. On subsequent requests, `Language::loadLanguage()` constructs a file path using this value and executes it via `require`, achieving arbitrary PHP code execution as the web server user. Version 2.3.6 fixes the issue.

Affected packages

Ecosystem Package Introduced Fixed

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