{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-86533",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-86533",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-17T13:09:37.963Z",
    "updatedAt": "2026-09-17T18:17:21.199Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Revoked session accepted because the session jti is never checked in AshAuthentication and AshAuthentication Phoenix",
      "summary": "Insufficient 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.",
      "affected": [
        {
          "vendor": "team-alembic",
          "product": "ash_authentication",
          "packageName": "ash_authentication",
          "collectionURL": "https://repo.hex.pm",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4.9.1",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.15.0"
            },
            {
              "version": "5.0.0-rc.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.0.0-rc.14"
            }
          ]
        },
        {
          "vendor": "team-alembic",
          "product": "ash_authentication",
          "packageName": "team-alembic/ash_authentication",
          "collectionURL": "https://github.com",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "fcaeb73f76f8f2e9aef8bf637690d2a20dd97596",
              "status": "affected",
              "versionType": "git",
              "lessThan": "*",
              "changes": [
                {
                  "at": "a3f49f758f013d2ff086dd9c5ef2d94e921711b4",
                  "status": "unaffected"
                },
                {
                  "at": "e28e911caa9728d76329afdb0fb26742ffe4eeef",
                  "status": "unaffected"
                }
              ]
            }
          ]
        },
        {
          "vendor": "team-alembic",
          "product": "ash_authentication_phoenix",
          "packageName": "ash_authentication_phoenix",
          "collectionURL": "https://repo.hex.pm",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.10.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.17.4"
            },
            {
              "version": "3.0.0-rc.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "3.0.0-rc.11"
            }
          ]
        },
        {
          "vendor": "team-alembic",
          "product": "ash_authentication_phoenix",
          "packageName": "team-alembic/ash_authentication_phoenix",
          "collectionURL": "https://github.com",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a3253fb4fc7145aeb403537af1c24d3a8d51ffb1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "*",
              "changes": [
                {
                  "at": "f7ab005a2aac09707a25521653c94893d328cc52",
                  "status": "unaffected"
                },
                {
                  "at": "0135217e34e621dac79ae3d9559aeee49304b0aa",
                  "status": "unaffected"
                }
              ]
            },
            {
              "version": "0135217e34e621dac79ae3d9559aeee49304b0aa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "*",
              "changes": [
                {
                  "at": "f7ab005a2aac09707a25521653c94893d328cc52",
                  "status": "unaffected"
                },
                {
                  "at": "0135217e34e621dac79ae3d9559aeee49304b0aa",
                  "status": "unaffected"
                }
              ]
            }
          ]
        }
      ]
    }
  }
}