{
    "id": "CVE-2026-42796",
    "published": "2026-05-04 18:16:32",
    "last_modified": "2026-06-17 10:48:25",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-306",
    "description": "Arelle before 2.39.10 contains an unauthenticated remote code execution vulnerability in the /rest/configure REST endpoint that accepts a plugins query parameter and forwards it to the plugin manager without authentication or authorization. Attackers can supply a URL to a malicious Python file through the plugins parameter, causing the Arelle webserver to download and execute the attacker-controlled code within the Arelle process with its privileges.",
    "epss_score": "0.03878",
    "epss_percentile": "0.89946",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-08 18:17:54",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "workiva",
            "product": "arelle"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://github.com/Arelle/Arelle/pull/2320",
        "https://github.com/Arelle/Arelle/releases/tag/2.39.10",
        "https://www.vulncheck.com/advisories/arelle-unauthenticated-rce-via-rest-configure"
    ]
}