{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.27.0"
              },
              {
                "fixed": "1.11.0"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "4c1f8a2d1a3de21d8bb141f6349f82e4f1c88f4a"
            },
            {
              "fixed": "4e2c5476ecfd2c701488627ee46e6eefc58c982e"
            },
            {
              "fixed": "c8863ed8e5c21f1bfb6125f1d24e78443dfc6351"
            }
          ],
          "repo": "https://github.com/ash-project/ash_graphql",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-mrgv-g7gf-r96h"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-20"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81633.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "365b3aedc6b36f020e6a2c7dce63fa569243bc4e"
          },
          {
            "fixed": "c8863ed8e5c21f1bfb6125f1d24e78443dfc6351"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "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.",
  "id": "CVE-2026-81633",
  "modified": "2026-09-01T03:30:22.595427865Z",
  "published": "2026-08-30T18:22:07.096Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-81633.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-81633"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81633.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ash-project/ash_graphql/security/advisories/GHSA-mrgv-g7gf-r96h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81633"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ash-project/ash_graphql/commit/c8863ed8e5c21f1bfb6125f1d24e78443dfc6351"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ash-project/ash_graphql"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Unhandled KeyError in AshGraphql relay node resolution crashes queries via an unknown type segment"
}