{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-81633",
        "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "state": "PUBLISHED",
        "assignerShortName": "EEF",
        "dateReserved": "2026-08-30T17:15:01.281Z",
        "datePublished": "2026-08-30T18:22:07.096Z",
        "dateUpdated": "2026-08-30T18:22:07.096Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "collectionURL": "https://repo.hex.pm",
                    "cpes": [
                        "cpe:2.3:a:ash-project:ash_graphql:*:*:*:*:*:*:*:*"
                    ],
                    "defaultStatus": "unaffected",
                    "modules": [
                        "'Elixir.AshGraphql.Graphql.Resolver'"
                    ],
                    "packageName": "ash_graphql",
                    "packageURL": "pkg:hex/ash_graphql",
                    "product": "ash_graphql",
                    "programFiles": [
                        "lib/graphql/resolver.ex"
                    ],
                    "programRoutines": [
                        {
                            "name": "'Elixir.AshGraphql.Graphql.Resolver':resolve_node/2"
                        }
                    ],
                    "repo": "https://github.com/ash-project/ash_graphql",
                    "vendor": "ash-project",
                    "versions": [
                        {
                            "lessThan": "1.11.0",
                            "status": "affected",
                            "version": "0.27.0",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "collectionURL": "https://github.com",
                    "cpes": [
                        "cpe:2.3:a:ash-project:ash_graphql:*:*:*:*:*:*:*:*"
                    ],
                    "defaultStatus": "unaffected",
                    "modules": [
                        "'Elixir.AshGraphql.Graphql.Resolver'"
                    ],
                    "packageName": "ash-project/ash_graphql",
                    "packageURL": "pkg:github/ash-project/ash_graphql",
                    "product": "ash_graphql",
                    "programFiles": [
                        "lib/graphql/resolver.ex"
                    ],
                    "programRoutines": [
                        {
                            "name": "'Elixir.AshGraphql.Graphql.Resolver':resolve_node/2"
                        }
                    ],
                    "repo": "https://github.com/ash-project/ash_graphql",
                    "vendor": "ash-project",
                    "versions": [
                        {
                            "lessThan": "c8863ed8e5c21f1bfb6125f1d24e78443dfc6351",
                            "status": "affected",
                            "version": "365b3aedc6b36f020e6a2c7dce63fa569243bc4e",
                            "versionType": "git"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "cpeMatch": [
                                {
                                    "criteria": "cpe:2.3:a:ash-project:ash_graphql:*:*:*:*:*:*:*:*",
                                    "versionEndExcluding": "1.11.0",
                                    "versionStartIncluding": "0.27.0",
                                    "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": "remediation developer",
                    "value": "Zach Daniel / Ash Project"
                },
                {
                    "lang": "en",
                    "type": "coordinator",
                    "value": "Jonatan Männchen / EEF"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "<p>Improper Input Validation vulnerability in ash-project ash_graphql allows an unauthenticated client to crash a relay <code>node(id: ...)</code> query with an unhandled <code>KeyError</code>.</p>\n<p><code>AshGraphql.Graphql.Resolver.resolve_node/2</code> decodes the client-supplied global ID with <code>decode_relay_id/1</code>, which only base64-decodes the string and splits it on <code>:</code> without validating the type segment. The decoded type is passed straight to <code>Map.fetch!(type_to_domain_and_resource_map, type)</code>. Because <code>fetch!</code> raises on a missing key, a relay ID whose type segment is a valid atom that is not a relay-exposed type aborts the resolver before its <code>resolve/2</code> clauses and their <code>rescue</code> handlers run, so the error never becomes a GraphQL error and may expose a stacktrace. Common resource names are easy to guess. The fix uses <code>Map.fetch/2</code> and returns an <code>Invalid node id</code> error for unknown types.</p>\n<p>This issue affects ash_graphql: from 0.27.0 before 1.11.0.</p>"
                        },
                        {
                            "base64": false,
                            "type": "text/markdown",
                            "value": "Improper Input Validation vulnerability in ash-project ash_graphql allows an unauthenticated client to crash a relay `node(id: ...)` query with an unhandled `KeyError`.\n\n`AshGraphql.Graphql.Resolver.resolve_node/2` decodes the client-supplied global ID with `decode_relay_id/1`, which only base64-decodes the string and splits it on `:` without validating the type segment. The decoded type is passed straight to `Map.fetch!(type_to_domain_and_resource_map, type)`. Because `fetch!` raises on a missing key, a relay ID whose type segment is a valid atom that is not a relay-exposed type aborts the resolver before its `resolve/2` clauses and their `rescue` handlers run, so the error never becomes a GraphQL error and may expose a stacktrace. Common resource names are easy to guess. The fix uses `Map.fetch/2` and returns an `Invalid node id` error for unknown types.\n\nThis issue affects ash_graphql: from 0.27.0 before 1.11.0."
                        }
                    ],
                    "value": "Improper Input Validation vulnerability in ash-project ash_graphql allows an unauthenticated client to crash a relay node(id: ...) query with an unhandled KeyError.\n\nAshGraphql.Graphql.Resolver.resolve_node/2 decodes the client-supplied global ID with decode_relay_id/1, which only base64-decodes the string and splits it on : without validating the type segment. The decoded type is passed straight to Map.fetch!(type_to_domain_and_resource_map, type). Because fetch! raises on a missing key, a relay ID whose type segment is a valid atom that is not a relay-exposed type aborts the resolver before its resolve/2 clauses and their rescue handlers run, so the error never becomes a GraphQL error and may expose a stacktrace. Common resource names are easy to guess. The fix uses Map.fetch/2 and returns an Invalid node id error for unknown types.\n\nThis issue affects ash_graphql: from 0.27.0 before 1.11.0."
                }
            ],
            "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": "NONE",
                        "attackVector": "NETWORK",
                        "baseScore": 6.9,
                        "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:N/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-20",
                            "description": "CWE-20 Improper Input Validation",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
                "shortName": "EEF",
                "dateUpdated": "2026-08-30T18:22:07.096Z"
            },
            "references": [
                {
                    "tags": [
                        "vendor-advisory",
                        "related"
                    ],
                    "url": "https://github.com/ash-project/ash_graphql/security/advisories/GHSA-mrgv-g7gf-r96h"
                },
                {
                    "tags": [
                        "related"
                    ],
                    "url": "https://cna.erlef.org/cves/CVE-2026-81633.html"
                },
                {
                    "tags": [
                        "related"
                    ],
                    "url": "https://osv.dev/vulnerability/EEF-CVE-2026-81633"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/ash-project/ash_graphql/commit/c8863ed8e5c21f1bfb6125f1d24e78443dfc6351"
                }
            ],
            "source": {
                "discovery": "EXTERNAL"
            },
            "title": "Unhandled KeyError in AshGraphql relay node resolution crashes queries via an unknown type segment"
        }
    }
}