{"id":"CVE-2026-41228","aliases":["GHSA-w59f-67xm-rxx7"],"url":"https://o3.security/vulnerability/CVE-2026-41228","summary":"Froxlor has Local File Inclusion via path traversal in API `def_language` parameter that leads to Remote Code Execution","details":"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.","published":"2026-04-23T03:41:47.479Z","modified":"2026-08-12T03:51:27.866805580Z","cvss":{"score":9.9,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},"epss":{"score":0.00524,"percentile":0.43261,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"froxlor/froxlor","fixedVersion":"2.3.6"}],"fix":{"url":"https://github.com/froxlor/froxlor/commit/bc5e6dbaa90e6f3573129da640595e8c770e1d0c","label":"froxlor/froxlor@bc5e6db"},"references":[{"type":"WEB","url":"https://github.com/froxlor/froxlor/releases/tag/2.3.6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41228.json"},{"type":"ADVISORY","url":"https://github.com/froxlor/froxlor/security/advisories/GHSA-w59f-67xm-rxx7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41228"},{"type":"FIX","url":"https://github.com/froxlor/froxlor/commit/bc5e6dbaa90e6f3573129da640595e8c770e1d0c"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:27.866805580Z"}}