{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:workiva:arelle:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.39.10"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0733db1f789202e3417d2b71dbd02d486da01299"
            }
          ],
          "repo": "https://github.com/arelle/arelle",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-306"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42796.json"
  },
  "details": "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.",
  "id": "CVE-2026-42796",
  "modified": "2026-08-12T03:51:26.871847893Z",
  "published": "2026-05-04T17:19:43.020Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42796.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42796"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/arelle-unauthenticated-rce-via-rest-configure"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Arelle/Arelle/pull/2320"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Arelle/Arelle/releases/tag/2.39.10"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Arelle \u003c 2.39.10 Unauthenticated RCE via /rest/configure"
}