CVE-2026-41228
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.
- Score
- CVSS 3.1 10.0 Critical
- Status
- Analyzed - security-advisories@github.com
- Published
- 2026-04-23
- Last modified
- 2026-04-23
- Weaknesses
- CWE-98
Affected products
References
- https://github.com/froxlor/froxlor/commit/bc5e6dbaa90e6f3573129da640595e8c770e1d0c
- https://github.com/froxlor/froxlor/releases/tag/2.3.6
- https://github.com/froxlor/froxlor/security/advisories/GHSA-w59f-67xm-rxx7
