{
  "affected": [
    {
      "database_specific": {
        "source": "https://cna.erlef.org/osv/EEF-CVE-2026-85500.json"
      },
      "package": {
        "ecosystem": "Hex",
        "name": "ash_authentication",
        "purl": "pkg:hex/ash_authentication"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.3.8"
            },
            {
              "fixed": "4.15.0"
            }
          ],
          "type": "SEMVER"
        },
        {
          "events": [
            {
              "introduced": "5.0.0-rc.0"
            },
            {
              "fixed": "5.0.0-rc.14"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": [
        "4.10.0",
        "4.11.0",
        "4.12.0",
        "4.13.0",
        "4.13.1",
        "4.13.2",
        "4.13.3",
        "4.13.4",
        "4.13.5",
        "4.13.6",
        "4.13.7",
        "4.14.0",
        "4.14.1",
        "4.14.2",
        "4.3.10",
        "4.3.11",
        "4.3.12",
        "4.3.8",
        "4.3.9",
        "4.4.0",
        "4.4.1",
        "4.4.2",
        "4.4.3",
        "4.4.4",
        "4.4.5",
        "4.4.6",
        "4.4.7",
        "4.4.8",
        "4.4.9",
        "4.5.0",
        "4.5.1",
        "4.5.2",
        "4.5.3",
        "4.5.4",
        "4.5.5",
        "4.5.6",
        "4.6.0",
        "4.6.1",
        "4.6.2",
        "4.6.3",
        "4.6.4",
        "4.7.0",
        "4.7.1",
        "4.7.2",
        "4.7.3",
        "4.7.4",
        "4.7.5",
        "4.7.6",
        "4.8.0",
        "4.8.1",
        "4.8.2",
        "4.8.3",
        "4.8.5",
        "4.8.6",
        "4.8.7",
        "4.9.0",
        "4.9.1",
        "4.9.2",
        "4.9.3",
        "4.9.4",
        "4.9.5",
        "4.9.6",
        "4.9.7",
        "4.9.8",
        "4.9.9",
        "5.0.0-rc.0",
        "5.0.0-rc.1",
        "5.0.0-rc.10",
        "5.0.0-rc.11",
        "5.0.0-rc.12",
        "5.0.0-rc.13",
        "5.0.0-rc.2",
        "5.0.0-rc.3",
        "5.0.0-rc.4",
        "5.0.0-rc.5",
        "5.0.0-rc.6",
        "5.0.0-rc.7",
        "5.0.0-rc.8",
        "5.0.0-rc.9"
      ]
    },
    {
      "database_specific": {
        "source": "https://cna.erlef.org/osv/EEF-CVE-2026-85500.json"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7d37bc6e4df6697b5813d2f373f0fdb08f813f98"
            },
            {
              "fixed": "17f4c25a372d1778c9cc457759e6357570d83711"
            },
            {
              "fixed": "1076639a9d40213088d110c79ba6735b8cc85b16"
            }
          ],
          "repo": "https://github.com/team-alembic/ash_authentication",
          "type": "GIT"
        }
      ],
      "versions": [
        "v4.14.2",
        "v5.0.0-rc.13",
        "v4.14.1",
        "v5.0.0-rc.12",
        "v5.0.0-rc.11",
        "v5.0.0-rc.10",
        "v4.14.0",
        "v4.13.7",
        "5.0.0-rc.9",
        "5.0.0-rc.8",
        "v5.0.0-rc.7",
        "v5.0.0-rc.6",
        "v5.0.0-rc.5",
        "v5.0.0-rc.4",
        "v5.0.0-rc.3",
        "v5.0.0-rc.2",
        "v5.0.0-rc.1",
        "v5.0.0-rc.0",
        "v4.13.6",
        "v4.13.5",
        "v4.13.4",
        "v4.13.3",
        "v4.13.2",
        "v4.13.1",
        "v4.13.0",
        "v4.12.0",
        "v4.11.0",
        "v4.10.0",
        "v4.9.9",
        "v4.9.8",
        "v4.9.7",
        "v4.9.6",
        "v4.9.5",
        "v4.9.4",
        "v4.9.3",
        "v4.9.2",
        "v4.9.1",
        "v4.9.0",
        "v4.8.7",
        "v4.8.5",
        "v4.8.4",
        "v4.8.3",
        "v4.8.2",
        "v4.8.1",
        "v4.8.0",
        "v4.7.7",
        "v4.7.6",
        "v4.7.5",
        "v4.7.4",
        "v4.7.3",
        "v4.7.2",
        "v4.7.1",
        "v4.7.0",
        "v4.6.4",
        "v4.6.3",
        "v4.6.2",
        "v4.6.1",
        "v4.6.0",
        "v4.5.6",
        "v4.5.5",
        "v4.5.4",
        "v4.5.3",
        "v4.5.2",
        "v4.5.1",
        "v4.4.9",
        "v4.4.8",
        "v4.4.7",
        "v4.4.6",
        "v4.4.5",
        "v4.4.4",
        "v4.4.3",
        "v4.4.2",
        "v4.4.1",
        "v4.4.0",
        "v4.3.12",
        "v4.3.10",
        "v4.3.9"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-85500",
    "GHSA-fc47-6pgw-wh22"
  ],
  "credits": [
    {
      "name": "Peter Ullrich",
      "type": "REPORTER"
    },
    {
      "name": "Jonatan Männchen / EEF",
      "type": "ANALYST"
    },
    {
      "name": "James Harton",
      "type": "REMEDIATION_DEVELOPER"
    }
  ],
  "database_specific": {
    "capec_ids": [
      "CAPEC-115"
    ],
    "cpe_ids": [
      "cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*"
    ],
    "cwe_ids": [
      "CWE-305"
    ]
  },
  "details": "## Summary\n\nAuthentication Bypass by Primary Weakness vulnerability in team-alembic AshAuthentication allows an unconfirmed user to obtain a session, defeating a mandatory email confirmation requirement.\n\n`AshAuthentication.Strategy.Password.Actions.check_user/2` decides whether the attribute named by `require_confirmed_with` is set using a bare `is_nil(Map.get(user, value))`. When that attribute is not selected on the loaded record `Map.get/2` returns `%Ash.NotLoaded{}`, and when a field policy denies it for the current actor it returns `%Ash.ForbiddenField{}`. Neither is `nil`, so the rejection branch is skipped and sign-i\n\n`require_confirmed_with` is enforced in two places, and neither holds in every\nconfiguration. `sign_in_with_token` and `register` are checked only inside\n`AshAuthentication.Strategy.Password.Actions`, not on the action itself, so any caller\nthat invokes the action directly skips the check. An API layer such as `AshGraphql` or\n`AshJsonApi` invokes the action directly, so this applies to the default configuration.\nWhere a check does run it compares the confirmation attribute against `nil`. That\nattribute holds `%Ash.NotLoaded{}` or `%Ash.ForbiddenField{}` when it sets\n`select_by_default?: false`, when an API layer narrows the read's `select`, or when a\nfield policy hides it from the sign-in actor. Neither struct is `nil`, so those\nconfigurations read every user as confirmed.\n\nThis issue affects ash_authentication: from 4.3.8 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.",
  "id": "EEF-CVE-2026-85500",
  "modified": "2026-09-17T13:26:03.573264589Z",
  "published": "2026-09-17T13:09:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-fc47-6pgw-wh22"
    },
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-85500.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/team-alembic/ash_authentication/commit/7d37bc6e4df6697b5813d2f373f0fdb08f813f98"
    },
    {
      "type": "FIX",
      "url": "https://github.com/team-alembic/ash_authentication/commit/17f4c25a372d1778c9cc457759e6357570d83711"
    },
    {
      "type": "FIX",
      "url": "https://github.com/team-alembic/ash_authentication/commit/1076639a9d40213088d110c79ba6735b8cc85b16"
    },
    {
      "type": "PACKAGE",
      "url": "https://hex.pm/packages/ash_authentication"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "`require_confirmed_with` is not enforced on the action and fails open on an unreadable attribute in AshAuthentication"
}