{
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          "collectionURL": "https://repo.hex.pm",
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          "defaultStatus": "unaffected",
          "modules": [
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          ],
          "packageName": "ash",
          "packageURL": "pkg:hex/ash",
          "product": "ash",
          "programFiles": [
            "lib/ash/type/type.ex"
          ],
          "programRoutines": [
            {
              "name": "\u0027Elixir.Ash.Type\u0027:apply_constraints/3"
            }
          ],
          "repo": "https://github.com/ash-project/ash",
          "vendor": "ash-project",
          "versions": [
            {
              "lessThan": "3.32.2",
              "status": "affected",
              "version": "2.16.1",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://github.com",
          "cpes": [
            "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.Ash.Type\u0027"
          ],
          "packageName": "ash-project/ash",
          "packageURL": "pkg:github/ash-project/ash",
          "product": "ash",
          "programFiles": [
            "lib/ash/type/type.ex"
          ],
          "programRoutines": [
            {
              "name": "\u0027Elixir.Ash.Type\u0027:apply_constraints/3"
            }
          ],
          "repo": "https://github.com/ash-project/ash",
          "vendor": "ash-project",
          "versions": [
            {
              "lessThan": "c85ccff7dc6e3b0b3e40ad788b0056b3b6bee5ce",
              "status": "affected",
              "version": "7b50a401d85018371659e51c34c89d7e1d0c2ac9",
              "versionType": "git"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "3.32.2",
                  "versionStartIncluding": "2.16.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "AND"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Jonatan M\u00e4nnchen / EEF"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Zach Daniel / Ash Project"
        },
        {
          "lang": "en",
          "type": "reporter",
          "value": "Peter Ullrich"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Peter Ullrich"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eImproper Input Validation vulnerability in ash-project ash fails to enforce the outer array constraints on a doubly-nested \u003ccode\u003e{:array, {:array, type}}\u003c/code\u003e attribute, letting invalid input pass validation.\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eAsh.Type.apply_constraints/3\u003c/code\u003e (\u003ccode\u003elib/ash/type/type.ex\u003c/code\u003e) handled the \u003ccode\u003e{:array, {:array, type}}\u003c/code\u003e case by mapping only the inner \u003ccode\u003e{:array, type}\u003c/code\u003e constraints over each element, so constraints declared on the outer array (such as \u003ccode\u003emin_length\u003c/code\u003e, \u003ccode\u003emax_length\u003c/code\u003e, and \u003ccode\u003enil_items?\u003c/code\u003e) were never applied. An attacker could submit an outer list that violates those constraints (too many elements, or \u003ccode\u003enil\u003c/code\u003e entries where disallowed) and have it accepted and persisted. The fix enforces the outer array constraints and adds explicit handling for \u003ccode\u003enil\u003c/code\u003e and non-list inputs.\u003c/p\u003e\n\u003cp\u003eThis issue affects ash: from 2.16.1 before 3.32.2.\u003c/p\u003e"
            },
            {
              "base64": false,
              "type": "text/markdown",
              "value": "Improper Input Validation vulnerability in ash-project ash fails to enforce the outer array constraints on a doubly-nested `{:array, {:array, type}}` attribute, letting invalid input pass validation.\n\n`Ash.Type.apply_constraints/3` (`lib/ash/type/type.ex`) handled the `{:array, {:array, type}}` case by mapping only the inner `{:array, type}` constraints over each element, so constraints declared on the outer array (such as `min_length`, `max_length`, and `nil_items?`) were never applied. An attacker could submit an outer list that violates those constraints (too many elements, or `nil` entries where disallowed) and have it accepted and persisted. The fix enforces the outer array constraints and adds explicit handling for `nil` and non-list inputs.\n\nThis issue affects ash: from 2.16.1 before 3.32.2."
            }
          ],
          "value": "Improper Input Validation vulnerability in ash-project ash fails to enforce the outer array constraints on a doubly-nested {:array, {:array, type}} attribute, letting invalid input pass validation.\n\nAsh.Type.apply_constraints/3 (lib/ash/type/type.ex) handled the {:array, {:array, type}} case by mapping only the inner {:array, type} constraints over each element, so constraints declared on the outer array (such as min_length, max_length, and nil_items?) were never applied. An attacker could submit an outer list that violates those constraints (too many elements, or nil entries where disallowed) and have it accepted and persisted. The fix enforces the outer array constraints and adds explicit handling for nil and non-list inputs.\n\nThis issue affects ash: from 2.16.1 before 3.32.2."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-153",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-153 Input Data Manipulation"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "LOCAL",
            "baseScore": 2.1,
            "baseSeverity": "LOW",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20 Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-01T03:29:11.804Z",
        "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "shortName": "EEF"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "related"
          ],
          "url": "https://github.com/ash-project/ash/security/advisories/GHSA-v29m-p28g-w5fc"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://cna.erlef.org/cves/CVE-2026-82740.html"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82740"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/ash-project/ash/commit/c85ccff7dc6e3b0b3e40ad788b0056b3b6bee5ce"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Ash.Type ignores outer array constraints on nested {:array, {:array, type}} inputs"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
    "assignerShortName": "EEF",
    "cveId": "CVE-2026-82740",
    "datePublished": "2026-09-01T03:29:11.804Z",
    "dateReserved": "2026-08-31T00:59:10.002Z",
    "dateUpdated": "2026-09-01T03:29:11.804Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}