{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.hex.pm",
          "cpes": [
            "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.Ash.Reactor.ChangeStep\u0027"
          ],
          "packageName": "ash",
          "packageURL": "pkg:hex/ash",
          "product": "ash",
          "programFiles": [
            "lib/ash/reactor/steps/change_step.ex"
          ],
          "programRoutines": [
            {
              "name": "\u0027Elixir.Ash.Reactor.ChangeStep\u0027:apply_where_clauses/3"
            }
          ],
          "repo": "https://github.com/ash-project/ash",
          "vendor": "ash-project",
          "versions": [
            {
              "lessThan": "3.32.2",
              "status": "affected",
              "version": "3.0.0-rc.17",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://github.com",
          "cpes": [
            "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.Ash.Reactor.ChangeStep\u0027"
          ],
          "packageName": "ash-project/ash",
          "packageURL": "pkg:github/ash-project/ash",
          "product": "ash",
          "programFiles": [
            "lib/ash/reactor/steps/change_step.ex"
          ],
          "programRoutines": [
            {
              "name": "\u0027Elixir.Ash.Reactor.ChangeStep\u0027:apply_where_clauses/3"
            }
          ],
          "repo": "https://github.com/ash-project/ash",
          "vendor": "ash-project",
          "versions": [
            {
              "lessThan": "6d2eb86ea8d2ba5ffac89c1b8b9bf46e331feabc",
              "status": "affected",
              "version": "321f43bd05ad9544e693cbf797243693e51a6be4",
              "versionType": "git"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "3.32.2",
                  "versionStartIncluding": "3.0.0-rc.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "AND"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Peter Ullrich"
        },
        {
          "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"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eNot Failing Securely (Failing Open) vulnerability in ash-project ash skips an \u003ccode\u003eAsh.Reactor\u003c/code\u003e change when the guard controlling it raises, so a change meant to run does not.\u003c/p\u003e\n\u003cp\u003eAn \u003ccode\u003eAsh.Reactor\u003c/code\u003e \u003ccode\u003echange\u003c/code\u003e step can be gated by \u003ccode\u003ewhere\u003c/code\u003e validations that decide whether the change runs. \u003ccode\u003eAsh.Reactor.ChangeStep\u003c/code\u003e (\u003ccode\u003elib/ash/reactor/steps/change_step.ex\u003c/code\u003e) evaluated those guards in \u003ccode\u003eapply_where_clauses/3\u003c/code\u003e, and \u003ccode\u003eapply_validation\u003c/code\u003e rescued any exception into \u003ccode\u003e{:error, error}\u003c/code\u003e. The reduce treated that identically to a guard whose condition was simply not met and bypassed the change. So when a guard raises (for example on attacker-influenced input), a change that enforces a security-relevant modification is skipped rather than failing the step. The fix distinguishes a raised exception (now \u003ccode\u003e{:raised, error}\u003c/code\u003e) and halts the step with an error, failing closed.\u003c/p\u003e\n\u003cp\u003eThis issue affects ash: from 3.0.0-rc.17 before 3.32.2.\u003c/p\u003e"
            },
            {
              "base64": false,
              "type": "text/markdown",
              "value": "Not Failing Securely (Failing Open) vulnerability in ash-project ash skips an `Ash.Reactor` change when the guard controlling it raises, so a change meant to run does not.\n\nAn `Ash.Reactor` `change` step can be gated by `where` validations that decide whether the change runs. `Ash.Reactor.ChangeStep` (`lib/ash/reactor/steps/change_step.ex`) evaluated those guards in `apply_where_clauses/3`, and `apply_validation` rescued any exception into `{:error, error}`. The reduce treated that identically to a guard whose condition was simply not met and bypassed the change. So when a guard raises (for example on attacker-influenced input), a change that enforces a security-relevant modification is skipped rather than failing the step. The fix distinguishes a raised exception (now `{:raised, error}`) and halts the step with an error, failing closed.\n\nThis issue affects ash: from 3.0.0-rc.17 before 3.32.2."
            }
          ],
          "value": "Not Failing Securely (Failing Open) vulnerability in ash-project ash skips an Ash.Reactor change when the guard controlling it raises, so a change meant to run does not.\n\nAn Ash.Reactor change step can be gated by where validations that decide whether the change runs. Ash.Reactor.ChangeStep (lib/ash/reactor/steps/change_step.ex) evaluated those guards in apply_where_clauses/3, and apply_validation rescued any exception into {:error, error}. The reduce treated that identically to a guard whose condition was simply not met and bypassed the change. So when a guard raises (for example on attacker-influenced input), a change that enforces a security-relevant modification is skipped rather than failing the step. The fix distinguishes a raised exception (now {:raised, error}) and halts the step with an error, failing closed.\n\nThis issue affects ash: from 3.0.0-rc.17 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-636",
              "description": "CWE-636 Not Failing Securely (\u0027Failing Open\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-01T03:39:42.668Z",
        "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "shortName": "EEF"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "related"
          ],
          "url": "https://github.com/ash-project/ash/security/advisories/GHSA-3xq4-m876-fr88"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://cna.erlef.org/cves/CVE-2026-82744.html"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82744"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/ash-project/ash/commit/6d2eb86ea8d2ba5ffac89c1b8b9bf46e331feabc"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Ash.Reactor change step fails open, skipping a change when its where guard raises"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
    "assignerShortName": "EEF",
    "cveId": "CVE-2026-82744",
    "datePublished": "2026-09-01T03:39:42.668Z",
    "dateReserved": "2026-08-31T01:00:09.774Z",
    "dateUpdated": "2026-09-01T03:39:42.668Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}