{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.7.0"
              },
              {
                "fixed": "1.0.0-alpha.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "8699e6417a162c39d9f0ef63511bd23d3f38d1d2"
            },
            {
              "fixed": "681c9702b7cd9afe0e5a840751ab009f550c69a9"
            },
            {
              "introduced": "3bbb0bf2b8c1dac4190e84b00f40d7471be54f6e"
            },
            {
              "fixed": "3662af413d950373f8976746fae965ef5f5cd490"
            }
          ],
          "repo": "https://github.com/danielberkompas/cloak",
          "type": "GIT"
        },
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a8fa1642b02f1c445a1ee8794c9095eb0921f8f3"
            }
          ],
          "repo": "https://github.com/danielberkompas/cloak_ecto",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-916"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94206.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "1.0.0-alpha.0"
          },
          {
            "fixed": "*"
          },
          {
            "introduced": "a8fa1642b02f1c445a1ee8794c9095eb0921f8f3"
          },
          {
            "fixed": "*"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Use of Password Hash With Insufficient Computational Effort vulnerability in danielberkompas cloak_ecto and danielberkompas cloak allows an attacker who holds the hashed values and the configured secret to brute-force low-entropy plaintexts much faster than configured.\n\nThe dump/1 callback that Cloak.Ecto.PBKDF2 (Cloak.Fields.PBKDF2 in cloak before the Ecto code moved to cloak_ecto) injects into a field module calls :pbkdf2.pbkdf2/4 with config[:size] in the iteration-count position. The :iterations setting is validated but never used. With the cloak_ecto defaults (iterations: 600_000, size: 32) each hash runs 32 PBKDF2 rounds instead of 600,000, so offline guessing of values such as email addresses costs about 18,750 times less than configured.\n\nThis issue affects cloak_ecto: from 1.0.0-alpha.0 onward; cloak: from 0.7.0 before 1.0.0-alpha.0.",
  "id": "CVE-2026-94206",
  "modified": "2026-10-08T02:30:48.530997761Z",
  "published": "2026-10-06T08:38:04.584Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-94206"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://cna.erlef.org/cves/CVE-2026-94206.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94206.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-94206"
    },
    {
      "type": "FIX",
      "url": "https://github.com/danielberkompas/cloak/commit/681c9702b7cd9afe0e5a840751ab009f550c69a9"
    },
    {
      "type": "FIX",
      "url": "https://github.com/danielberkompas/cloak/commit/8699e6417a162c39d9f0ef63511bd23d3f38d1d2"
    },
    {
      "type": "FIX",
      "url": "https://github.com/danielberkompas/cloak_ecto/commit/a8fa1642b02f1c445a1ee8794c9095eb0921f8f3"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/danielberkompas/cloak"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/danielberkompas/cloak_ecto"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Cloak PBKDF2 field ignores the configured iteration count and runs only :size rounds"
}