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

{
    "lastseen": "",
    "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.",
    "published": "2026-04-23T03:41:47.479Z",
    "modified": "2026-04-23T03:41:47.479Z",
    "type": "cve",
    "title": "Froxlor has Local File Inclusion via path traversal in API `def_language` parameter that leads to Remote Code Execution",
    "source": "GitHub_M",
    "references": "https://github.com/froxlor/froxlor/security/advisories/GHSA-w59f-67xm-rxx7\nhttps://github.com/froxlor/froxlor/commit/bc5e6dbaa90e6f3573129da640595e8c770e1d0c\nhttps://github.com/froxlor/froxlor/releases/tag/2.3.6",
    "id": "CVE-2026-41228",
    "bulletinFamily": "",
    "cwe": [
        "CWE-98"
    ],
    "cvelist": null,
    "sourceData": "froxlor froxlor < 2.3.6",
    "sourceHref": "",
    "cvss": {
        "score": 10,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "froxlor",
    "version": "< 2.3.6",
    "vendor": "froxlor",
    "ai_description": "Local File Inclusion via path traversal in API `def_language` parameter that leads to Remote Code Execution",
    "ai_severity": "Critical",
    "ai_vendor": "Froxlor",
    "ai_product": "Froxlor",
    "ai_version": "< 2.3.6",
    "ai_score": 10
}