CVE-2026-49757 OAuth2/OIDC account takeover in AshAuthentication via email-based user matching

[
  {
    "collectionURL": "https://repo.hex.pm",
    "cpes": [
      "cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.AshAuthentication.Strategy.OAuth2.IdentityChange'",
      "'Elixir.AshAuthentication.Strategy.OAuth2.SignInPreparation'"
    ],
    "packageName": "ash_authentication",
    "packageURL": "pkg:hex/ash_authentication",
    "product": "ash_authentication",
    "programFiles": [
      "lib/ash_authentication/strategies/oauth2/identity_change.ex",
      "lib/ash_authentication/strategies/oauth2/sign_in_preparation.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.AshAuthentication.Strategy.OAuth2.IdentityChange':change/3"
      },
      {
        "name": "'Elixir.AshAuthentication.Strategy.OAuth2.SignInPreparation':prepare/3"
      }
    ],
    "repo": "https://github.com/team-alembic/ash_authentication",
    "vendor": "team-alembic",
    "versions": [
      {
        "lessThan": "4.14.0",
        "status": "affected",
        "version": "0.1.0",
        "versionType": "semver"
      },
      {
        "lessThan": "5.0.0-rc.10",
        "status": "affected",
        "version": "5.0.0-rc.0",
        "versionType": "semver"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.AshAuthentication.Strategy.OAuth2.IdentityChange'",
      "'Elixir.AshAuthentication.Strategy.OAuth2.SignInPreparation'"
    ],
    "packageName": "team-alembic/ash_authentication",
    "packageURL": "pkg:github/team-alembic/ash_authentication",
    "product": "ash_authentication",
    "programFiles": [
      "lib/ash_authentication/strategies/oauth2/identity_change.ex",
      "lib/ash_authentication/strategies/oauth2/sign_in_preparation.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.AshAuthentication.Strategy.OAuth2.IdentityChange':change/3"
      },
      {
        "name": "'Elixir.AshAuthentication.Strategy.OAuth2.SignInPreparation':prepare/3"
      }
    ],
    "repo": "https://github.com/team-alembic/ash_authentication.git",
    "vendor": "team-alembic",
    "versions": [
      {
        "changes": [
          {
            "at": "728b8d28c1b5f465fa1116ef044a815300fc733d",
            "status": "unaffected"
          },
          {
            "at": "64530644f9b37ebb76ca14aeb83a77597a0034b7",
            "status": "unaffected"
          }
        ],
        "lessThan": "*",
        "status": "affected",
        "version": "c5f589058e04239263f50a1430eb17ea6d5dd1a2",
        "versionType": "git"
      }
    ]
  }
]