{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.2.0"
              },
              {
                "fixed": "1.3.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "66c3b37bffde8a0b00258d032505eef7b5720fd4"
            },
            {
              "fixed": "0dd18084589a3d3e577d1f1a8a48fb485c94a5e6"
            },
            {
              "fixed": "4720dfca2bde27fa140ec287a05709668fbdf168"
            },
            {
              "fixed": "81715a5a258ae2657369344f4e3523e5fbabb2af"
            }
          ],
          "repo": "https://github.com/hydra-ecosystem/hydra",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-5jjj-9xc3-rm56"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-470"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106440.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "1.4.0.dev4"
          },
          {
            "fixed": "1.4.0.dev10"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Hydra is a framework for elegantly configuring complex applications. From 1.2.0 until 1.3.0 and 1.4.0.dev10, the hydra-optuna-sweeper package accepts a configuration-controlled dotted path in hydra.sweeper.custom_search_space, resolves it with hydra.utils.get_method(), and later invokes the returned callable in the Hydra controller process. Because get_method() is a trusted-input lookup helper and does not apply the execution policy used by instantiate(), an attacker who controls Optuna sweep configuration or command-line overrides can select importable Python code for execution with the application's privileges, including bypassing a trusted execution whitelist on affected Hydra 1.4 development releases. This issue is fixed in versions 1.3.0 and 1.4.0.dev10.",
  "id": "CVE-2026-106440",
  "modified": "2026-10-08T02:31:10.487026074Z",
  "published": "2026-10-06T18:51:37.549Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/hydra-ecosystem/hydra/releases/tag/v1.3.7"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106440.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/hydra-ecosystem/hydra/security/advisories/GHSA-5jjj-9xc3-rm56"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-106440"
    },
    {
      "type": "FIX",
      "url": "https://github.com/hydra-ecosystem/hydra/commit/0dd18084589a3d3e577d1f1a8a48fb485c94a5e6"
    },
    {
      "type": "FIX",
      "url": "https://github.com/hydra-ecosystem/hydra/commit/4720dfca2bde27fa140ec287a05709668fbdf168"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Hydra: Optuna custom_search_space can resolve and execute untrusted callables via get_method"
}