{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "2136da1f64eec8ebf99890d3100be9394534b842"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "d2a89a8db76a244eb740687524a7e8529b7554b5"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2136da1f64eec8ebf99890d3100be9394534b842"
            },
            {
              "fixed": "d2a89a8db76a244eb740687524a7e8529b7554b5"
            }
          ],
          "repo": "https://github.com/enspirit/elo",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-33r5-xmm8-v6x5"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-1336",
      "CWE-693",
      "CWE-79",
      "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44267.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "range": [
              {
                "fixed": "1.0.1"
              }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
          }
        ]
      },
      {
        "extracted_events": [
          {
            "range": [
              {
                "fixed": "1.0.1"
              },
              {
                "fixed": "1.0.1"
              }
            ],
            "source": "DESCRIPTION"
          }
        ]
      }
    ]
  },
  "details": "Elo is a purely functional expression language for no-code tools. Prior to 1.0.1, plain Elo strings supplied to defaultFormats.elo.parse(), bin/elo, or elo-lang.org/try can use .constructor.constructor to reach JavaScript Function because the member_access handler in src/transform.ts does not reject meta-properties, src/compilers/javascript.ts emits the surviving property directly, and src/parser.ts accepts constructor as an ordinary identifier. The resulting generated JavaScript executes attacker-selected code in the host runtime. This permits browser script execution and session compromise on the auto-running playground and arbitrary Node.js code execution on library, CI, or DevOps hosts. This plain-string path is distinct from the programmatic AST-object injection issue. This issue is fixed in version 1.0.1.",
  "id": "CVE-2026-44267",
  "modified": "2026-11-05T02:30:17.170099211Z",
  "published": "2026-11-03T17:52:25.509Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44267.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/enspirit/elo/security/advisories/GHSA-33r5-xmm8-v6x5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44267"
    },
    {
      "type": "FIX",
      "url": "https://github.com/enspirit/elo/commit/2136da1f64eec8ebf99890d3100be9394534b842"
    },
    {
      "type": "FIX",
      "url": "https://github.com/enspirit/elo/commit/d2a89a8db76a244eb740687524a7e8529b7554b5"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Elo: Sandbox escape to arbitrary Node.js / browser code execution via unfiltered `.constructor` member access in Elo JavaScript emitter"
}