{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-82739",
        "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "state": "PUBLISHED",
        "assignerShortName": "EEF",
        "dateReserved": "2026-08-31T00:59:10.002Z",
        "datePublished": "2026-09-01T03:27:58.165Z",
        "dateUpdated": "2026-09-01T03:27:58.165Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "collectionURL": "https://repo.hex.pm",
                    "cpes": [
                        "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"
                    ],
                    "defaultStatus": "unaffected",
                    "modules": [
                        "'Elixir.Ash.Resource.Validation.Confirm'"
                    ],
                    "packageName": "ash",
                    "packageURL": "pkg:hex/ash",
                    "product": "ash",
                    "programFiles": [
                        "lib/ash/resource/validation/confirm.ex"
                    ],
                    "programRoutines": [
                        {
                            "name": "'Elixir.Ash.Resource.Validation.Confirm':atomic/2"
                        }
                    ],
                    "repo": "https://github.com/ash-project/ash",
                    "vendor": "ash-project",
                    "versions": [
                        {
                            "lessThan": "3.32.2",
                            "status": "affected",
                            "version": "2.17.20",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "collectionURL": "https://github.com",
                    "cpes": [
                        "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"
                    ],
                    "defaultStatus": "unaffected",
                    "modules": [
                        "'Elixir.Ash.Resource.Validation.Confirm'"
                    ],
                    "packageName": "ash-project/ash",
                    "packageURL": "pkg:github/ash-project/ash",
                    "product": "ash",
                    "programFiles": [
                        "lib/ash/resource/validation/confirm.ex"
                    ],
                    "programRoutines": [
                        {
                            "name": "'Elixir.Ash.Resource.Validation.Confirm':atomic/2"
                        }
                    ],
                    "repo": "https://github.com/ash-project/ash",
                    "vendor": "ash-project",
                    "versions": [
                        {
                            "lessThan": "7dfe5f0b1ba4267580ded947dc861351d4dc8e2b",
                            "status": "affected",
                            "version": "fadecf3ee95640bd3bc7298df4799e0375537fd2",
                            "versionType": "git"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "cpeMatch": [
                                {
                                    "criteria": "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*",
                                    "versionEndExcluding": "3.32.2",
                                    "versionStartIncluding": "2.17.20",
                                    "vulnerable": true
                                }
                            ],
                            "negate": false,
                            "operator": "OR"
                        }
                    ],
                    "operator": "AND"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "coordinator",
                    "value": "Jonatan Männchen / EEF"
                },
                {
                    "lang": "en",
                    "type": "reporter",
                    "value": "Peter Ullrich"
                },
                {
                    "lang": "en",
                    "type": "remediation developer",
                    "value": "Zach Daniel / Ash Project"
                },
                {
                    "lang": "en",
                    "type": "finder",
                    "value": "Peter Ullrich"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "<p>Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash discloses the stored value of a confirmed field to an actor who fails its confirmation check.</p>\n<p><code>Ash.Resource.Validation.Confirm</code>'s atomic implementation (<code>atomic/2</code> in <code>lib/ash/resource/validation/confirm.ex</code>) built the mismatch error with its <code>value</code> set to the field being confirmed. When the actor supplies only the confirmation argument and not the field itself, <code>value</code> resolves through <code>atomic_ref/2</code> to the field's current stored value, so the mismatch error echoes that stored value back to the actor. Against a confirmation guarding a sensitive attribute, an actor can submit a deliberately wrong confirmation and read the real value from the returned error. The fix reports the actor-supplied confirmation in the error instead of the stored field value.</p>\n<p>This issue affects ash: from 2.17.20 before 3.32.2.</p>"
                        },
                        {
                            "base64": false,
                            "type": "text/markdown",
                            "value": "Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash discloses the stored value of a confirmed field to an actor who fails its confirmation check.\n\n`Ash.Resource.Validation.Confirm`'s atomic implementation (`atomic/2` in `lib/ash/resource/validation/confirm.ex`) built the mismatch error with its `value` set to the field being confirmed. When the actor supplies only the confirmation argument and not the field itself, `value` resolves through `atomic_ref/2` to the field's current stored value, so the mismatch error echoes that stored value back to the actor. Against a confirmation guarding a sensitive attribute, an actor can submit a deliberately wrong confirmation and read the real value from the returned error. The fix reports the actor-supplied confirmation in the error instead of the stored field value.\n\nThis issue affects ash: from 2.17.20 before 3.32.2."
                        }
                    ],
                    "value": "Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash discloses the stored value of a confirmed field to an actor who fails its confirmation check.\n\nAsh.Resource.Validation.Confirm's atomic implementation (atomic/2 in lib/ash/resource/validation/confirm.ex) built the mismatch error with its value set to the field being confirmed. When the actor supplies only the confirmation argument and not the field itself, value resolves through atomic_ref/2 to the field's current stored value, so the mismatch error echoes that stored value back to the actor. Against a confirmation guarding a sensitive attribute, an actor can submit a deliberately wrong confirmation and read the real value from the returned error. The fix reports the actor-supplied confirmation in the error instead of the stored field value.\n\nThis issue affects ash: from 2.17.20 before 3.32.2."
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-54",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-54 Query System for Information"
                        }
                    ]
                }
            ],
            "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: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-209",
                            "description": "CWE-209 Generation of Error Message Containing Sensitive Information",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
                "shortName": "EEF",
                "dateUpdated": "2026-09-01T03:27:58.165Z"
            },
            "references": [
                {
                    "tags": [
                        "vendor-advisory",
                        "related"
                    ],
                    "url": "https://github.com/ash-project/ash/security/advisories/GHSA-66cg-vj5m-8w7v"
                },
                {
                    "tags": [
                        "related"
                    ],
                    "url": "https://cna.erlef.org/cves/CVE-2026-82739.html"
                },
                {
                    "tags": [
                        "related"
                    ],
                    "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82739"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/ash-project/ash/commit/7dfe5f0b1ba4267580ded947dc861351d4dc8e2b"
                }
            ],
            "source": {
                "discovery": "EXTERNAL"
            },
            "title": "Ash.Resource.Validation.Confirm leaks a confirmed field's stored value in the atomic mismatch error"
        }
    }
}