{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-94206",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-06T11:34:00.942993Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-06T11:36:25.466Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.hex.pm",
          "cpes": [
            "cpe:2.3:a:danielberkompas:cloak_ecto:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.Cloak.Ecto.PBKDF2\u0027"
          ],
          "packageName": "cloak_ecto",
          "packageURL": "pkg:hex/cloak_ecto",
          "product": "cloak_ecto",
          "programFiles": [
            "lib/cloak_ecto/types/pbkdf2.ex"
          ],
          "repo": "https://github.com/danielberkompas/cloak_ecto",
          "vendor": "danielberkompas",
          "versions": [
            {
              "lessThan": "*",
              "status": "affected",
              "version": "1.0.0-alpha.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://github.com",
          "cpes": [
            "cpe:2.3:a:danielberkompas:cloak_ecto:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.Cloak.Ecto.PBKDF2\u0027"
          ],
          "packageName": "danielberkompas/cloak_ecto",
          "packageURL": "pkg:github/danielberkompas/cloak_ecto",
          "product": "cloak_ecto",
          "programFiles": [
            "lib/cloak_ecto/types/pbkdf2.ex"
          ],
          "repo": "https://github.com/danielberkompas/cloak_ecto",
          "vendor": "danielberkompas",
          "versions": [
            {
              "lessThan": "*",
              "status": "affected",
              "version": "a8fa1642b02f1c445a1ee8794c9095eb0921f8f3",
              "versionType": "git"
            }
          ]
        },
        {
          "collectionURL": "https://repo.hex.pm",
          "cpes": [
            "cpe:2.3:a:danielberkompas:cloak:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.Cloak.Fields.PBKDF2\u0027"
          ],
          "packageName": "cloak",
          "packageURL": "pkg:hex/cloak",
          "product": "cloak",
          "programFiles": [
            "lib/cloak/fields/pbkdf2.ex"
          ],
          "repo": "https://github.com/danielberkompas/cloak",
          "vendor": "danielberkompas",
          "versions": [
            {
              "lessThan": "1.0.0-alpha.0",
              "status": "affected",
              "version": "0.7.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://github.com",
          "cpes": [
            "cpe:2.3:a:danielberkompas:cloak:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.Cloak.Fields.PBKDF2\u0027"
          ],
          "packageName": "danielberkompas/cloak",
          "packageURL": "pkg:github/danielberkompas/cloak",
          "product": "cloak",
          "programFiles": [
            "lib/cloak/fields/pbkdf2.ex"
          ],
          "repo": "https://github.com/danielberkompas/cloak",
          "vendor": "danielberkompas",
          "versions": [
            {
              "lessThan": "681c9702b7cd9afe0e5a840751ab009f550c69a9",
              "status": "affected",
              "version": "8699e6417a162c39d9f0ef63511bd23d3f38d1d2",
              "versionType": "git"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:danielberkompas:cloak_ecto:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "1.0.0-alpha.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:danielberkompas:cloak:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.0.0-alpha.0",
                  "versionStartIncluding": "0.7.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "AND"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Peter Ullrich"
        },
        {
          "lang": "en",
          "type": "reporter",
          "value": "Peter Ullrich"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Jonatan M\u00e4nnchen / EEF"
        }
      ],
      "dateAssigned": "2026-10-06T08:35:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eUse 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.\u003c/p\u003e\n\u003cp\u003eThe \u003ccode\u003edump/1\u003c/code\u003e callback that \u003ccode\u003eCloak.Ecto.PBKDF2\u003c/code\u003e (\u003ccode\u003eCloak.Fields.PBKDF2\u003c/code\u003e in cloak before the Ecto code moved to cloak_ecto) injects into a field module calls \u003ccode\u003e:pbkdf2.pbkdf2/4\u003c/code\u003e with \u003ccode\u003econfig[:size]\u003c/code\u003e in the iteration-count position. The \u003ccode\u003e:iterations\u003c/code\u003e setting is validated but never used. With the cloak_ecto defaults (\u003ccode\u003eiterations: 600_000\u003c/code\u003e, \u003ccode\u003esize: 32\u003c/code\u003e) 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.\u003c/p\u003e\n\u003cp\u003eThis issue affects cloak_ecto: from 1.0.0-alpha.0 onward; cloak: from 0.7.0 before 1.0.0-alpha.0.\u003c/p\u003e"
            },
            {
              "base64": false,
              "type": "text/markdown",
              "value": "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."
            }
          ],
          "value": "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."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-55",
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eAn attacker who obtains a database dump and the PBKDF2 secret can recover hashed values with low entropy, such as email addresses, by offline guessing at a cost far below what the configuration promises.\u003c/p\u003e"
                },
                {
                  "base64": false,
                  "type": "text/markdown",
                  "value": "An attacker who obtains a database dump and the PBKDF2 secret can recover hashed values with low entropy, such as email addresses, by offline guessing at a cost far below what the configuration promises."
                }
              ],
              "value": "An attacker who obtains a database dump and the PBKDF2 secret can recover hashed values with low entropy, such as email addresses, by offline guessing at a cost far below what the configuration promises."
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-916",
              "description": "CWE-916 Use of Password Hash With Insufficient Computational Effort",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T08:38:04.584Z",
        "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "shortName": "EEF"
      },
      "references": [
        {
          "name": "EEF CNA record for CVE-2026-94206",
          "tags": [
            "related",
            "third-party-advisory"
          ],
          "url": "https://cna.erlef.org/cves/CVE-2026-94206.html"
        },
        {
          "name": "OSV record EEF-CVE-2026-94206",
          "tags": [
            "related"
          ],
          "url": "https://osv.dev/vulnerability/EEF-CVE-2026-94206"
        },
        {
          "name": "Introducing commit a8fa164 in danielberkompas/cloak_ecto",
          "tags": [
            "related"
          ],
          "url": "https://github.com/danielberkompas/cloak_ecto/commit/a8fa1642b02f1c445a1ee8794c9095eb0921f8f3"
        },
        {
          "name": "Introducing commit 8699e64 in danielberkompas/cloak",
          "tags": [
            "related"
          ],
          "url": "https://github.com/danielberkompas/cloak/commit/8699e6417a162c39d9f0ef63511bd23d3f38d1d2"
        },
        {
          "name": "Fix commit 681c970 in danielberkompas/cloak",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/danielberkompas/cloak/commit/681c9702b7cd9afe0e5a840751ab009f550c69a9"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Cloak PBKDF2 field ignores the configured iteration count and runs only :size rounds",
      "workarounds": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eOverride \u003ccode\u003edump/1\u003c/code\u003e in the field module that uses \u003ccode\u003eCloak.Ecto.PBKDF2\u003c/code\u003e, so that it calls \u003ccode\u003e:pbkdf2.pbkdf2/5\u003c/code\u003e with the configured \u003ccode\u003e:iterations\u003c/code\u003e and \u003ccode\u003e:size\u003c/code\u003e. Then recompute all stored hashes, because the existing values no longer match.\u003c/p\u003e"
            },
            {
              "base64": false,
              "type": "text/markdown",
              "value": "Override `dump/1` in the field module that uses `Cloak.Ecto.PBKDF2`, so that it calls `:pbkdf2.pbkdf2/5` with the configured `:iterations` and `:size`. Then recompute all stored hashes, because the existing values no longer match."
            }
          ],
          "value": "Override dump/1 in the field module that uses Cloak.Ecto.PBKDF2, so that it calls :pbkdf2.pbkdf2/5 with the configured :iterations and :size. Then recompute all stored hashes, because the existing values no longer match."
        }
      ],
      "x_proofOfConcept": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003col\u003e\n\u003cli\u003eDefine a field module with \u003ccode\u003euse Cloak.Ecto.PBKDF2\u003c/code\u003e and configure only a \u003ccode\u003e:secret\u003c/code\u003e, so that the defaults \u003ccode\u003eiterations: 600_000\u003c/code\u003e and \u003ccode\u003esize: 32\u003c/code\u003e apply.\u003c/li\u003e\n\u003cli\u003eCall \u003ccode\u003edump/1\u003c/code\u003e on a value.\u003c/li\u003e\n\u003cli\u003eCompare the result with \u003ccode\u003e:pbkdf2.pbkdf2({:hmac, :sha256}, value, secret, 32)\u003c/code\u003e and with the same call at 600,000 rounds. It matches the 32-round hash, not the 600,000-round hash, and returns in microseconds instead of about one second.\u003c/li\u003e\n\u003c/ol\u003e"
            },
            {
              "base64": false,
              "type": "text/markdown",
              "value": "1. Define a field module with `use Cloak.Ecto.PBKDF2` and configure only a `:secret`, so that the defaults `iterations: 600_000` and `size: 32` apply.\n2. Call `dump/1` on a value.\n3. Compare the result with `:pbkdf2.pbkdf2({:hmac, :sha256}, value, secret, 32)` and with the same call at 600,000 rounds. It matches the 32-round hash, not the 600,000-round hash, and returns in microseconds instead of about one second."
            }
          ],
          "value": "* Define a field module with use Cloak.Ecto.PBKDF2 and configure only a :secret, so that the defaults iterations: 600_000 and size: 32 apply.\n* Call dump/1 on a value.\n* Compare the result with :pbkdf2.pbkdf2({:hmac, :sha256}, value, secret, 32) and with the same call at 600,000 rounds. It matches the 32-round hash, not the 600,000-round hash, and returns in microseconds instead of about one second."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
    "assignerShortName": "EEF",
    "cveId": "CVE-2026-94206",
    "datePublished": "2026-10-06T08:38:04.584Z",
    "dateReserved": "2026-09-24T09:30:02.102Z",
    "dateUpdated": "2026-10-06T11:36:25.466Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}