by Kastro
Paper/Archive/CVE-2026-41228

CVE-2026-41228

froxlor froxlor — Froxlor has Local File Inclusion via path traversal in API `def_language` parameter that leads to Remote Code Execution

EPSS 0.5%public exploitCVSS 10.0
critical.is priorityof 100
49
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 44.5.445 × 208.9Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE 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

ProductAffectedFixed inSource
froxlor< 2.3.6–CNA

Scores by source

GitHub_M (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploitgithub.com/froxlor/froxlor/security/advisories/GHSA-w59f-67xm-rxx7refgithub.com/froxlor/froxlor/commit/bc5e6dbaa90e6f3573129da640595e8c770e1d0crefgithub.com/froxlor/froxlor/releases/tag/2.3.6