CVE-2026-86533

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-86533", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-09-11T18:00:02.036Z", "datePublished": "2026-09-17T13:09:37.963Z", "dateUpdated": "2026-09-17T18:17:21.199Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshAuthentication.Plug.Helpers'"], "packageName": "ash_authentication", "packageURL": "pkg:hex/ash_authentication", "product": "ash_authentication", "programFiles": ["lib/ash_authentication/plug/helpers.ex"], "programRoutines": [{"name": "'Elixir.AshAuthentication.Plug.Helpers':retrieve_from_session/3"}, {"name": "'Elixir.AshAuthentication.Plug.Helpers':authenticate_resource_from_session/4"}], "repo": "https://github.com/team-alembic/ash_authentication", "vendor": "team-alembic", "versions": [{"lessThan": "4.15.0", "status": "affected", "version": "4.9.1", "versionType": "semver"}, {"lessThan": "5.0.0-rc.14", "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.Plug.Helpers'"], "packageName": "team-alembic/ash_authentication", "packageURL": "pkg:github/team-alembic/ash_authentication", "product": "ash_authentication", "programFiles": ["lib/ash_authentication/plug/helpers.ex"], "programRoutines": [{"name": "'Elixir.AshAuthentication.Plug.Helpers':retrieve_from_session/3"}, {"name": "'Elixir.AshAuthentication.Plug.Helpers':authenticate_resource_from_session/4"}], "repo": "https://github.com/team-alembic/ash_authentication", "vendor": "team-alembic", "versions": [{"changes": [{"at": "a3f49f758f013d2ff086dd9c5ef2d94e921711b4", "status": "unaffected"}, {"at": "e28e911caa9728d76329afdb0fb26742ffe4eeef", "status": "unaffected"}], "lessThan": "*", "status": "affected", "version": "fcaeb73f76f8f2e9aef8bf637690d2a20dd97596", "versionType": "git"}]}, {"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:team-alembic:ash_authentication_phoenix:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshAuthentication.Phoenix.LiveSession'"], "packageName": "ash_authentication_phoenix", "packageURL": "pkg:hex/ash_authentication_phoenix", "product": "ash_authentication_phoenix", "programFiles": ["lib/ash_authentication_phoenix/live_session.ex"], "programRoutines": [{"name": "'Elixir.AshAuthentication.Phoenix.LiveSession':on_mount/4"}], "repo": "https://github.com/team-alembic/ash_authentication_phoenix", "vendor": "team-alembic", "versions": [{"lessThan": "2.17.4", "status": "affected", "version": "2.10.0", "versionType": "semver"}, {"lessThan": "3.0.0-rc.11", "status": "affected", "version": "3.0.0-rc.0", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:team-alembic:ash_authentication_phoenix:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshAuthentication.Phoenix.LiveSession'"], "packageName": "team-alembic/ash_authentication_phoenix", "packageURL": "pkg:github/team-alembic/ash_authentication_phoenix", "product": "ash_authentication_phoenix", "programFiles": ["lib/ash_authentication_phoenix/live_session.ex"], "programRoutines": [{"name": "'Elixir.AshAuthentication.Phoenix.LiveSession':on_mount/4"}], "repo": "https://github.com/team-alembic/ash_authentication_phoenix", "vendor": "team-alembic", "versions": [{"changes": [{"at": "f7ab005a2aac09707a25521653c94893d328cc52", "status": "unaffected"}, {"at": "0135217e34e621dac79ae3d9559aeee49304b0aa", "status": "unaffected"}], "lessThan": "*", "status": "affected", "version": "a3253fb4fc7145aeb403537af1c24d3a8d51ffb1", "versionType": "git"}, {"changes": [{"at": "f7ab005a2aac09707a25521653c94893d328cc52", "status": "unaffected"}, {"at": "0135217e34e621dac79ae3d9559aeee49304b0aa", "status": "unaffected"}], "lessThan": "*", "status": "affected", "version": "0135217e34e621dac79ae3d9559aeee49304b0aa", "versionType": "git"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.15.0", "versionStartIncluding": "4.9.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.0.0-rc.14", "versionStartIncluding": "5.0.0-rc.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:team-alembic:ash_authentication_phoenix:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.17.4", "versionStartIncluding": "2.10.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:team-alembic:ash_authentication_phoenix:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.0.0-rc.11", "versionStartIncluding": "3.0.0-rc.0", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "AND"}], "credits": [{"lang": "en", "type": "reporter", "value": "Peter Ullrich"}, {"lang": "en", "type": "analyst", "value": "Jonatan M\u00e4nnchen / EEF"}, {"lang": "en", "type": "remediation developer", "value": "James Harton"}], "dateAssigned": "2026-09-11T18:52:39.000Z", "datePublic": "2026-09-17T13:09:38.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Insufficient Session Expiration vulnerability in team-alembic AshAuthentication and AshAuthentication Phoenix allows a revoked session to remain fully authenticated.</p>\n<p>A resource configured with <code>session_identifier :jti</code> and <code>require_token_presence_for_authentication?</code> disabled stores its session value as <code>&lt;jti&gt;:&lt;subject&gt;</code>. The <code>jti</code> is there so that signing out can revoke that one session. Neither reader consults it: <code>AshAuthentication.Plug.Helpers.authenticate_resource_from_session/4</code> and <code>AshAuthentication.Phoenix.LiveSession.on_mount/4</code> both split the value with <code>split_identifier/2</code>, discard the <code>jti</code> and pass the bare subject to <code>AshAuthentication.subject_to_user/3</code>, which reloads the record. The token-presence branch of each function does check its token, calling <code>AshAuthentication.TokenResource.Actions.get_token/3</code> with the <code>jti</code> and the purpose <code>user</code>. 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.</p>\n<p>This 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.</p>"}, {"base64": false, "type": "text/markdown", "value": "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."}], "value": "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."}], "impacts": [{"capecId": "CAPEC-60", "descriptions": [{"lang": "en", "value": "CAPEC-60 Reusing Session IDs (aka Session Replay)"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 9.1, "baseSeverity": "CRITICAL", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-613", "description": "CWE-613 Insufficient Session Expiration", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-09-17T14:05:29.472Z"}, "references": [{"tags": ["vendor-advisory", "related"], "url": "https://github.com/team-alembic/ash_authentication_phoenix/security/advisories/GHSA-m6x4-4gvp-xwjr"}, {"name": "EEF CNA record for CVE-2026-86533", "tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-86533.html"}, {"name": "OSV record EEF-CVE-2026-86533", "tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-86533"}, {"tags": ["related", "vendor-advisory"], "url": "https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-w374-hvrx-66hg"}, {"name": "Introducing commit fcaeb73 in team-alembic/ash_authentication", "tags": ["related"], "url": "https://github.com/team-alembic/ash_authentication/commit/fcaeb73f76f8f2e9aef8bf637690d2a20dd97596"}, {"name": "Fix commit a3f49f7 in team-alembic/ash_authentication", "tags": ["patch"], "url": "https://github.com/team-alembic/ash_authentication/commit/a3f49f758f013d2ff086dd9c5ef2d94e921711b4"}, {"name": "Fix commit e28e911 in team-alembic/ash_authentication", "tags": ["patch"], "url": "https://github.com/team-alembic/ash_authentication/commit/e28e911caa9728d76329afdb0fb26742ffe4eeef"}, {"name": "Introducing commit a3253fb in team-alembic/ash_authentication_phoenix", "tags": ["related"], "url": "https://github.com/team-alembic/ash_authentication_phoenix/commit/a3253fb4fc7145aeb403537af1c24d3a8d51ffb1"}, {"name": "Introducing commit 0135217 in team-alembic/ash_authentication_phoenix", "tags": ["related"], "url": "https://github.com/team-alembic/ash_authentication_phoenix/commit/0135217e34e621dac79ae3d9559aeee49304b0aa"}, {"name": "Fix commit f7ab005 in team-alembic/ash_authentication_phoenix", "tags": ["patch"], "url": "https://github.com/team-alembic/ash_authentication_phoenix/commit/f7ab005a2aac09707a25521653c94893d328cc52"}], "source": {"discovery": "INTERNAL"}, "title": "Revoked session accepted because the session jti is never checked in AshAuthentication and AshAuthentication Phoenix"}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-17T18:13:50.422619Z", "id": "CVE-2026-86533", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-17T18:17:21.199Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-86533", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-09-17T18:13:50.422619Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-17T18:17:15.369Z"}}], "cna": {"title": "Revoked session accepted because the session jti is never checked in AshAuthentication and AshAuthentication Phoenix", "source": {"discovery": "INTERNAL"}, "credits": [{"lang": "en", "type": "reporter", "value": "Peter Ullrich"}, {"lang": "en", "type": "analyst", "value": "Jonatan M\u00e4nnchen / EEF"}, {"lang": "en", "type": "remediation developer", "value": "James Harton"}], "impacts": [{"capecId": "CAPEC-60", "descriptions": [{"lang": "en", "value": "CAPEC-60 Reusing Session IDs (aka Session Replay)"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.1, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "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", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"cpes": ["cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*"], "repo": "https://github.com/team-alembic/ash_authentication", "vendor": "team-alembic", "modules": ["'Elixir.AshAuthentication.Plug.Helpers'"], "product": "ash_authentication", "versions": [{"status": "affected", "version": "4.9.1", "lessThan": "4.15.0", "versionType": "semver"}, {"status": "affected", "version": "5.0.0-rc.0", "lessThan": "5.0.0-rc.14", "versionType": "semver"}], "packageURL": "pkg:hex/ash_authentication", "packageName": "ash_authentication", "programFiles": ["lib/ash_authentication/plug/helpers.ex"], "collectionURL": "https://repo.hex.pm", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.AshAuthentication.Plug.Helpers':retrieve_from_session/3"}, {"name": "'Elixir.AshAuthentication.Plug.Helpers':authenticate_resource_from_session/4"}]}, {"cpes": ["cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*"], "repo": "https://github.com/team-alembic/ash_authentication", "vendor": "team-alembic", "modules": ["'Elixir.AshAuthentication.Plug.Helpers'"], "product": "ash_authentication", "versions": [{"status": "affected", "changes": [{"at": "a3f49f758f013d2ff086dd9c5ef2d94e921711b4", "status": "unaffected"}, {"at": "e28e911caa9728d76329afdb0fb26742ffe4eeef", "status": "unaffected"}], "version": "fcaeb73f76f8f2e9aef8bf637690d2a20dd97596", "lessThan": "*", "versionType": "git"}], "packageURL": "pkg:github/team-alembic/ash_authentication", "packageName": "team-alembic/ash_authentication", "programFiles": ["lib/ash_authentication/plug/helpers.ex"], "collectionURL": "https://github.com", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.AshAuthentication.Plug.Helpers':retrieve_from_session/3"}, {"name": "'Elixir.AshAuthentication.Plug.Helpers':authenticate_resource_from_session/4"}]}, {"cpes": ["cpe:2.3:a:team-alembic:ash_authentication_phoenix:*:*:*:*:*:*:*:*"], "repo": "https://github.com/team-alembic/ash_authentication_phoenix", "vendor": "team-alembic", "modules": ["'Elixir.AshAuthentication.Phoenix.LiveSession'"], "product": "ash_authentication_phoenix", "versions": [{"status": "affected", "version": "2.10.0", "lessThan": "2.17.4", "versionType": "semver"}, {"status": "affected", "version": "3.0.0-rc.0", "lessThan": "3.0.0-rc.11", "versionType": "semver"}], "packageURL": "pkg:hex/ash_authentication_phoenix", "packageName": "ash_authentication_phoenix", "programFiles": ["lib/ash_authentication_phoenix/live_session.ex"], "collectionURL": "https://repo.hex.pm", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.AshAuthentication.Phoenix.LiveSession':on_mount/4"}]}, {"cpes": ["cpe:2.3:a:team-alembic:ash_authentication_phoenix:*:*:*:*:*:*:*:*"], "repo": "https://github.com/team-alembic/ash_authentication_phoenix", "vendor": "team-alembic", "modules": ["'Elixir.AshAuthentication.Phoenix.LiveSession'"], "product": "ash_authentication_phoenix", "versions": [{"status": "affected", "changes": [{"at": "f7ab005a2aac09707a25521653c94893d328cc52", "status": "unaffected"}, {"at": "0135217e34e621dac79ae3d9559aeee49304b0aa", "status": "unaffected"}], "version": "a3253fb4fc7145aeb403537af1c24d3a8d51ffb1", "lessThan": "*", "versionType": "git"}, {"status": "affected", "changes": [{"at": "f7ab005a2aac09707a25521653c94893d328cc52", "status": "unaffected"}, {"at": "0135217e34e621dac79ae3d9559aeee49304b0aa", "status": "unaffected"}], "version": "0135217e34e621dac79ae3d9559aeee49304b0aa", "lessThan": "*", "versionType": "git"}], "packageURL": "pkg:github/team-alembic/ash_authentication_phoenix", "packageName": "team-alembic/ash_authentication_phoenix", "programFiles": ["lib/ash_authentication_phoenix/live_session.ex"], "collectionURL": "https://github.com", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.AshAuthentication.Phoenix.LiveSession':on_mount/4"}]}], "datePublic": "2026-09-17T13:09:38.000Z", "references": [{"url": "https://github.com/team-alembic/ash_authentication_phoenix/security/advisories/GHSA-m6x4-4gvp-xwjr", "tags": ["vendor-advisory", "related"]}, {"url": "https://cna.erlef.org/cves/CVE-2026-86533.html", "name": "EEF CNA record for CVE-2026-86533", "tags": ["related"]}, {"url": "https://osv.dev/vulnerability/EEF-CVE-2026-86533", "name": "OSV record EEF-CVE-2026-86533", "tags": ["related"]}, {"url": "https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-w374-hvrx-66hg", "tags": ["related", "vendor-advisory"]}, {"url": "https://github.com/team-alembic/ash_authentication/commit/fcaeb73f76f8f2e9aef8bf637690d2a20dd97596", "name": "Introducing commit fcaeb73 in team-alembic/ash_authentication", "tags": ["related"]}, {"url": "https://github.com/team-alembic/ash_authentication/commit/a3f49f758f013d2ff086dd9c5ef2d94e921711b4", "name": "Fix commit a3f49f7 in team-alembic/ash_authentication", "tags": ["patch"]}, {"url": "https://github.com/team-alembic/ash_authentication/commit/e28e911caa9728d76329afdb0fb26742ffe4eeef", "name": "Fix commit e28e911 in team-alembic/ash_authentication", "tags": ["patch"]}, {"url": "https://github.com/team-alembic/ash_authentication_phoenix/commit/a3253fb4fc7145aeb403537af1c24d3a8d51ffb1", "name": "Introducing commit a3253fb in team-alembic/ash_authentication_phoenix", "tags": ["related"]}, {"url": "https://github.com/team-alembic/ash_authentication_phoenix/commit/0135217e34e621dac79ae3d9559aeee49304b0aa", "name": "Introducing commit 0135217 in team-alembic/ash_authentication_phoenix", "tags": ["related"]}, {"url": "https://github.com/team-alembic/ash_authentication_phoenix/commit/f7ab005a2aac09707a25521653c94893d328cc52", "name": "Fix commit f7ab005 in team-alembic/ash_authentication_phoenix", "tags": ["patch"]}], "dateAssigned": "2026-09-11T18:52:39.000Z", "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "value": "<p>Insufficient Session Expiration vulnerability in team-alembic AshAuthentication and AshAuthentication Phoenix allows a revoked session to remain fully authenticated.</p>\n<p>A resource configured with <code>session_identifier :jti</code> and <code>require_token_presence_for_authentication?</code> disabled stores its session value as <code>&lt;jti&gt;:&lt;subject&gt;</code>. The <code>jti</code> is there so that signing out can revoke that one session. Neither reader consults it: <code>AshAuthentication.Plug.Helpers.authenticate_resource_from_session/4</code> and <code>AshAuthentication.Phoenix.LiveSession.on_mount/4</code> both split the value with <code>split_identifier/2</code>, discard the <code>jti</code> and pass the bare subject to <code>AshAuthentication.subject_to_user/3</code>, which reloads the record. The token-presence branch of each function does check its token, calling <code>AshAuthentication.TokenResource.Actions.get_token/3</code> with the <code>jti</code> and the purpose <code>user</code>. 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.</p>\n<p>This 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.</p>", "base64": false}, {"type": "text/markdown", "value": "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.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-613", "description": "CWE-613 Insufficient Session Expiration"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.15.0", "versionStartIncluding": "4.9.1"}, {"criteria": "cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.0.0-rc.14", "versionStartIncluding": "5.0.0-rc.0"}, {"criteria": "cpe:2.3:a:team-alembic:ash_authentication_phoenix:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "2.17.4", "versionStartIncluding": "2.10.0"}, {"criteria": "cpe:2.3:a:team-alembic:ash_authentication_phoenix:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "3.0.0-rc.11", "versionStartIncluding": "3.0.0-rc.0"}], "operator": "OR"}], "operator": "AND"}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-09-17T14:05:29.472Z"}}}, "cveMetadata": {"cveId": "CVE-2026-86533", "state": "PUBLISHED", "dateUpdated": "2026-09-17T18:17:21.199Z", "dateReserved": "2026-09-11T18:00:02.036Z", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "datePublished": "2026-09-17T13:09:37.963Z", "assignerShortName": "EEF"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshAuthentication.Plug.Helpers'"], "packageName": "ash_authentication", "packageURL": "pkg:hex/ash_authentication", "product": "ash_authentication", "programFiles": ["lib/ash_authentication/plug/helpers.ex"], "programRoutines": [{"name": "'Elixir.AshAuthentication.Plug.Helpers':retrieve_from_session/3"}, {"name": "'Elixir.AshAuthentication.Plug.Helpers':authenticate_resource_from_session/4"}], "repo": "https://github.com/team-alembic/ash_authentication", "vendor": "team-alembic", "versions": [{"lessThan": "4.15.0", "status": "affected", "version": "4.9.1", "versionType": "semver"}, {"lessThan": "5.0.0-rc.14", "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.Plug.Helpers'"], "packageName": "team-alembic/ash_authentication", "packageURL": "pkg:github/team-alembic/ash_authentication", "product": "ash_authentication", "programFiles": ["lib/ash_authentication/plug/helpers.ex"], "programRoutines": [{"name": "'Elixir.AshAuthentication.Plug.Helpers':retrieve_from_session/3"}, {"name": "'Elixir.AshAuthentication.Plug.Helpers':authenticate_resource_from_session/4"}], "repo": "https://github.com/team-alembic/ash_authentication", "vendor": "team-alembic", "versions": [{"changes": [{"at": "a3f49f758f013d2ff086dd9c5ef2d94e921711b4", "status": "unaffected"}, {"at": "e28e911caa9728d76329afdb0fb26742ffe4eeef", "status": "unaffected"}], "lessThan": "*", "status": "affected", "version": "fcaeb73f76f8f2e9aef8bf637690d2a20dd97596", "versionType": "git"}]}, {"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:team-alembic:ash_authentication_phoenix:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshAuthentication.Phoenix.LiveSession'"], "packageName": "ash_authentication_phoenix", "packageURL": "pkg:hex/ash_authentication_phoenix", "product": "ash_authentication_phoenix", "programFiles": ["lib/ash_authentication_phoenix/live_session.ex"], "programRoutines": [{"name": "'Elixir.AshAuthentication.Phoenix.LiveSession':on_mount/4"}], "repo": "https://github.com/team-alembic/ash_authentication_phoenix", "vendor": "team-alembic", "versions": [{"lessThan": "2.17.4", "status": "affected", "version": "2.10.0", "versionType": "semver"}, {"lessThan": "3.0.0-rc.11", "status": "affected", "version": "3.0.0-rc.0", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:team-alembic:ash_authentication_phoenix:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshAuthentication.Phoenix.LiveSession'"], "packageName": "team-alembic/ash_authentication_phoenix", "packageURL": "pkg:github/team-alembic/ash_authentication_phoenix", "product": "ash_authentication_phoenix", "programFiles": ["lib/ash_authentication_phoenix/live_session.ex"], "programRoutines": [{"name": "'Elixir.AshAuthentication.Phoenix.LiveSession':on_mount/4"}], "repo": "https://github.com/team-alembic/ash_authentication_phoenix", "vendor": "team-alembic", "versions": [{"changes": [{"at": "f7ab005a2aac09707a25521653c94893d328cc52", "status": "unaffected"}, {"at": "0135217e34e621dac79ae3d9559aeee49304b0aa", "status": "unaffected"}], "lessThan": "*", "status": "affected", "version": "a3253fb4fc7145aeb403537af1c24d3a8d51ffb1", "versionType": "git"}, {"changes": [{"at": "f7ab005a2aac09707a25521653c94893d328cc52", "status": "unaffected"}, {"at": "0135217e34e621dac79ae3d9559aeee49304b0aa", "status": "unaffected"}], "lessThan": "*", "status": "affected", "version": "0135217e34e621dac79ae3d9559aeee49304b0aa", "versionType": "git"}]}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-86533", "lastModified": "2026-09-18T18:16:18.527", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-86533", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-09-17T18:13:50.422619Z", "version": "2.0.3"}}]}, "published": "2026-09-17T14:17:46.467", "references": [{"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://cna.erlef.org/cves/CVE-2026-86533.html"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/team-alembic/ash_authentication/commit/a3f49f758f013d2ff086dd9c5ef2d94e921711b4"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/team-alembic/ash_authentication/commit/e28e911caa9728d76329afdb0fb26742ffe4eeef"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/team-alembic/ash_authentication/commit/fcaeb73f76f8f2e9aef8bf637690d2a20dd97596"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-w374-hvrx-66hg"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/team-alembic/ash_authentication_phoenix/commit/0135217e34e621dac79ae3d9559aeee49304b0aa"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/team-alembic/ash_authentication_phoenix/commit/a3253fb4fc7145aeb403537af1c24d3a8d51ffb1"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/team-alembic/ash_authentication_phoenix/commit/f7ab005a2aac09707a25521653c94893d328cc52"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/team-alembic/ash_authentication_phoenix/security/advisories/GHSA-m6x4-4gvp-xwjr"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://osv.dev/vulnerability/EEF-CVE-2026-86533"}], "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-613"}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.9.1,4.15.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.0.0-rc.0,5.0.0-rc.14)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "inferred", "scores": [{"score": 100.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "ash_authentication", "source": "cna", "vendor": "team-alembic"}, "product": "ash_authentication", "vendor": "team-alembic"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "fcaeb73f76f8e9aef8bf637690d2a20dd97596"}}], "enrichment": {"confidence": 100.0, "confidence_source": "inferred", "scores": [{"score": 100.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "ash_authentication", "source": "cna", "vendor": "team-alembic"}, "product": "ash_authentication", "vendor": "team-alembic"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.10.0,2.17.4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.0.0-rc.0,3.0.0-rc.11)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "inferred", "scores": [{"score": 100.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "ash_authentication_phoenix", "source": "cna", "vendor": "team-alembic"}, "product": "ash_authentication_phoenix", "vendor": "team-alembic"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "a3253fb4fc7145aeb403537af1c24d3a8d51ffb1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "0135217e34e621dac79ae3d9559aeee49304b0aa"}}], "enrichment": {"confidence": 100.0, "confidence_source": "inferred", "scores": [{"score": 100.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "ash_authentication_phoenix", "source": "cna", "vendor": "team-alembic"}, "product": "ash_authentication_phoenix", "vendor": "team-alembic"}], "created": "2026-09-17T22:30:16.858762+00:00", "updated": "2026-09-17T23:00:13.466076+00:00", "vendors": ["team-alembic", "team-alembic$PRODUCT$ash_authentication", "team-alembic$PRODUCT$ash_authentication_phoenix"]}