Roxy-WI: Authenticated RCE on every managed HAProxy load balancer via `option` field config injection in section save_CVE-2026-45558

{
    "lastseen": "",
    "description": "Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior, the HAProxy section-save endpoints (POST /api/service/haproxy/<server_id>/section/<section_type> and the PUT / global / defaults variants) accept a JSON option field that is not validated, not escaped, and is rendered verbatim into the generated HAProxy configuration via the section.j2, global.j2, and defaults.j2 Ansible templates. Because Roxy-WI then pushes the generated config to the load balancer and runs systemctl reload haproxy, an authenticated user with role \u2264 3 (user) can inject arbitrary HAProxy directives into the config that runs on every load balancer their group manages \u2014 including option external-check + external-check command /bin/bash -c '\u2026', which gives remote code execution on the load balancer as the haproxy user on every health-check tick. At time of publication, there are no publicly available patches.",
    "published": "2026-06-10T14:01:42.317Z",
    "modified": "2026-06-10T14:01:42.317Z",
    "type": "cve",
    "title": "Roxy-WI: Authenticated RCE on every managed HAProxy load balancer via `option` field config injection in section save",
    "source": "GitHub_M",
    "references": "https://github.com/roxy-wi/roxy-wi/security/advisories/GHSA-w2x4-66jj-3597",
    "id": "CVE-2026-45558",
    "bulletinFamily": "",
    "cwe": [
        "CWE-20",
        "CWE-77",
        "CWE-78",
        "CWE-94"
    ],
    "cvelist": null,
    "sourceData": "roxy-wi roxy-wi <= 8.2.6.4",
    "sourceHref": "",
    "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",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "roxy-wi",
    "version": "<= 8.2.6.4",
    "vendor": "roxy-wi",
    "ai_description": "Authenticated remote code execution vulnerability in Roxy-WI via config injection in section save",
    "ai_severity": "Critical",
    "ai_vendor": "Roxy-WI",
    "ai_product": "Roxy-WI",
    "ai_version": "<= 8.2.6.4",
    "ai_score": 9.9
}