Froxlor has an authorization bypass in FTP shell assignment via missing server-side `available_shells` enforcement_CVE-2026-41235

{
    "lastseen": "",
    "description": "Froxlor is open source server administration software. Version 2.3.6 lets administrators configure `system.available_shells` as the approved shell list that customers may assign to FTP users. However, the server-side FTP account handlers do not enforce that whitelist when processing add or edit requests. As a result, an authenticated customer with shell delegation enabled can submit an arbitrary shell such as `/bin/bash` even when the panel UI only offers more restricted choices. In deployments that use the default `nssextrausers` integration, the attacker-controlled shell is then propagated into the system account database, leading to real host shell access. Version 2.3.7 fixes the issue.",
    "published": "2026-06-04T17:50:09.899Z",
    "modified": "2026-06-04T17:50:09.899Z",
    "type": "cve",
    "title": "Froxlor has an authorization bypass in FTP shell assignment via missing server-side `available_shells` enforcement",
    "source": "GitHub_M",
    "references": "https://github.com/froxlor/froxlor/security/advisories/GHSA-gcv3-5v9q-fmhh\nhttps://github.com/froxlor/froxlor/releases/tag/2.3.7",
    "id": "CVE-2026-41235",
    "bulletinFamily": "",
    "cwe": [
        "CWE-863"
    ],
    "cvelist": null,
    "sourceData": "froxlor froxlor = 2.3.6",
    "sourceHref": "",
    "cvss": {
        "score": 8.6,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P",
        "version": "4.0"
    },
    "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": "Authorization bypass in FTP shell assignment due to missing server-side available_shells enforcement",
    "ai_severity": "High",
    "ai_vendor": "Froxlor",
    "ai_product": "Froxlor",
    "ai_version": "2.3.6",
    "ai_score": 8.6
}