{"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 Männchen / 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":{"dateUpdated":"2026-09-17T14:05:29.472Z","orgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","shortName":"EEF"},"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"}},"cveMetadata":{"assignerOrgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","assignerShortName":"EEF","cveId":"CVE-2026-86533","datePublished":"2026-09-17T13:09:37.963Z","dateReserved":"2026-09-11T18:00:02.036Z","dateUpdated":"2026-09-17T14:05:29.472Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"}