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CVE-2026-41228 - Froxlor has Local File Inclusion via path traversal in API `def_language` parameter that leads to Remote Code Execution

CVE ID :CVE-2026-41228
Published : April 23, 2026, 4:16 a.m. | 1 hour, 56 minutes ago
Description :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.
Severity: 9.9 | CRITICAL
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