{
  "affected": [
    {
      "database_specific": {
        "source": "https://cna.erlef.org/osv/EEF-CVE-2026-86533.json"
      },
      "package": {
        "ecosystem": "Hex",
        "name": "ash_authentication",
        "purl": "pkg:hex/ash_authentication"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.9.1"
            },
            {
              "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",
        "4.9.1",
        "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-2026-86533.json"
      },
      "package": {
        "ecosystem": "Hex",
        "name": "ash_authentication_phoenix",
        "purl": "pkg:hex/ash_authentication_phoenix"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.10.0"
            },
            {
              "fixed": "2.17.4"
            }
          ],
          "type": "SEMVER"
        },
        {
          "events": [
            {
              "introduced": "3.0.0-rc.0"
            },
            {
              "fixed": "3.0.0-rc.11"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": [
        "2.10.0",
        "2.10.1",
        "2.10.2",
        "2.10.3",
        "2.10.4",
        "2.10.5",
        "2.11.0",
        "2.12.0",
        "2.12.1",
        "2.12.2",
        "2.13.0",
        "2.13.1",
        "2.14.0",
        "2.14.1",
        "2.15.0",
        "2.16.0",
        "2.17.0",
        "2.17.1",
        "2.17.2",
        "2.17.3",
        "3.0.0-rc.0",
        "3.0.0-rc.1",
        "3.0.0-rc.10",
        "3.0.0-rc.2",
        "3.0.0-rc.3",
        "3.0.0-rc.4",
        "3.0.0-rc.6",
        "3.0.0-rc.7",
        "3.0.0-rc.8",
        "3.0.0-rc.9"
      ]
    },
    {
      "database_specific": {
        "source": "https://cna.erlef.org/osv/EEF-CVE-2026-86533.json"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "fcaeb73f76f8f2e9aef8bf637690d2a20dd97596"
            },
            {
              "fixed": "a3f49f758f013d2ff086dd9c5ef2d94e921711b4"
            },
            {
              "fixed": "e28e911caa9728d76329afdb0fb26742ffe4eeef"
            }
          ],
          "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"
      ]
    },
    {
      "database_specific": {
        "source": "https://cna.erlef.org/osv/EEF-CVE-2026-86533.json"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "a3253fb4fc7145aeb403537af1c24d3a8d51ffb1"
            },
            {
              "introduced": "0135217e34e621dac79ae3d9559aeee49304b0aa"
            },
            {
              "fixed": "f7ab005a2aac09707a25521653c94893d328cc52"
            },
            {
              "fixed": "0135217e34e621dac79ae3d9559aeee49304b0aa"
            }
          ],
          "repo": "https://github.com/team-alembic/ash_authentication_phoenix",
          "type": "GIT"
        }
      ],
      "versions": [
        "v2.17.3",
        "v3.0.0-rc.10",
        "v2.17.2",
        "v3.0.0-rc.9",
        "v2.17.1",
        "3.0.0-rc.8",
        "2.17.0",
        "v3.0.0-rc.7",
        "v2.16.0",
        "v3.0.0-rc.6",
        "v3.0.0-rc.4",
        "v3.0.0-rc.3",
        "3.0.0-rc.3",
        "v3.0.0-rc.1",
        "v2.15.0",
        "v3.0.0-rc.0",
        "v2.14.1",
        "v2.14.0",
        "v2.13.1",
        "v2.13.0",
        "v2.12.2",
        "v2.12.1",
        "v2.12.0",
        "v2.11.0",
        "v2.10.5",
        "v2.10.4",
        "v2.10.3",
        "v2.10.2",
        "v2.10.1",
        "v2.10.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-86533",
    "GHSA-m6x4-4gvp-xwjr"
  ],
  "credits": [
    {
      "name": "Peter Ullrich",
      "type": "REPORTER"
    },
    {
      "name": "Jonatan Männchen / EEF",
      "type": "ANALYST"
    },
    {
      "name": "James Harton",
      "type": "REMEDIATION_DEVELOPER"
    }
  ],
  "database_specific": {
    "capec_ids": [
      "CAPEC-60"
    ],
    "cpe_ids": [
      "cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*",
      "cpe:2.3:a:team-alembic:ash_authentication_phoenix:*:*:*:*:*:*:*:*"
    ],
    "cwe_ids": [
      "CWE-613"
    ]
  },
  "details": "## Summary\n\nInsufficient Session Expiration vulnerability in team-alembic AshAuthentication and AshAuthentication Phoenix allows a revoked session to remain fully authenticated.\n\nA resource configured with `session_identifier :jti` and `require_token_presence_for_authentication?` disabled stores its session value as `<jti>:<subject>`. The `jti` is there so that signing out can revoke that one session. Neither reader consults it: `AshAuthentication.Plug.Helpers.authenticate_resource_from_session/4` and `AshAuthentication.Phoenix.LiveSession.on_mount/4` both split the value with `split_identifier/2`, discard the `jti` and pass the bare subject to `AshAuthentication.subject_to_user/3`, which reloads the record. The token-presence branch of each function does check its token, calling `AshAuthentication.TokenResource.Actions.get_token/3` with the `jti` and the purpose `user`. Because the revocation record is never read, neither its revoked state nor its expiry constrains the session, so a session captured before sign-out keeps working.\n\nThis issue affects ash_authentication: from 4.9.1 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14; ash_authentication_phoenix: from 2.10.0 before 2.17.4 and from 3.0.0-rc.0 before 3.0.0-rc.11.",
  "id": "EEF-CVE-2026-86533",
  "modified": "2026-09-17T14:15:02.857426476Z",
  "published": "2026-09-17T13:09:37.963Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/team-alembic/ash_authentication_phoenix/security/advisories/GHSA-m6x4-4gvp-xwjr"
    },
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-86533.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-w374-hvrx-66hg"
    },
    {
      "type": "WEB",
      "url": "https://github.com/team-alembic/ash_authentication/commit/fcaeb73f76f8f2e9aef8bf637690d2a20dd97596"
    },
    {
      "type": "FIX",
      "url": "https://github.com/team-alembic/ash_authentication/commit/a3f49f758f013d2ff086dd9c5ef2d94e921711b4"
    },
    {
      "type": "FIX",
      "url": "https://github.com/team-alembic/ash_authentication/commit/e28e911caa9728d76329afdb0fb26742ffe4eeef"
    },
    {
      "type": "WEB",
      "url": "https://github.com/team-alembic/ash_authentication_phoenix/commit/a3253fb4fc7145aeb403537af1c24d3a8d51ffb1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/team-alembic/ash_authentication_phoenix/commit/0135217e34e621dac79ae3d9559aeee49304b0aa"
    },
    {
      "type": "FIX",
      "url": "https://github.com/team-alembic/ash_authentication_phoenix/commit/f7ab005a2aac09707a25521653c94893d328cc52"
    },
    {
      "type": "PACKAGE",
      "url": "https://hex.pm/packages/ash_authentication"
    },
    {
      "type": "PACKAGE",
      "url": "https://hex.pm/packages/ash_authentication_phoenix"
    }
  ],
  "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": "Revoked session accepted because the session jti is never checked in AshAuthentication and AshAuthentication Phoenix"
}