CVE-2026-86533
- Source
- https://cve.org/CVERecord?id=CVE-2026-86533
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86533.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-86533
- Aliases
-
- EEF-CVE-2026-86533
- GHSA-m6x4-4gvp-xwjr
- Related
- Published
- 2026-09-17T13:09:37Z
- Modified
- 2026-09-20T11:47:27Z
- Severity
-
- 9.1 (Critical) CVSS_V4 - 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 CVSS Calculator
- Summary
- Revoked session accepted because the session jti is never checked in AshAuthentication and AshAuthentication Phoenix
- Details
-
Insufficient Session Expiration vulnerability in team-alembic AshAuthentication and AshAuthentication Phoenix allows a revoked session to remain fully authenticated.
A resource configured with session_identifier :jti and require_token_presence_for_authentication? disabled stores its session value as :. 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.
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.
- Database specific
{ "cna_assigner": "EEF", "cwe_ids": [ "CWE-613" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86533.json", "unresolved_ranges": [ { "extracted_events": [ { "introduced": "fcaeb73f76f8f2e9aef8bf637690d2a20dd97596" }, { "fixed": "*" }, { "introduced": "2.10.0" }, { "fixed": "2.17.4" }, { "introduced": "3.0.0-rc.0" }, { "fixed": "3.0.0-rc.11" }, { "introduced": "a3253fb4fc7145aeb403537af1c24d3a8d51ffb1" }, { "fixed": "*" }, { "introduced": "0135217e34e621dac79ae3d9559aeee49304b0aa" }, { "fixed": "*" } ], "source": "AFFECTED_FIELD" } ] }- References
-
- https://cna.erlef.org/cves/CVE-2026-86533.html
- https://github.com
- https://osv.dev/vulnerability/EEF-CVE-2026-86533
- https://repo.hex.pm
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86533.json
- https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-w374-hvrx-66hg
- https://github.com/team-alembic/ash_authentication_phoenix/security/advisories/GHSA-m6x4-4gvp-xwjr
- https://nvd.nist.gov/vuln/detail/CVE-2026-86533
- https://github.com/team-alembic/ash_authentication/commit/a3f49f758f013d2ff086dd9c5ef2d94e921711b4
- https://github.com/team-alembic/ash_authentication/commit/e28e911caa9728d76329afdb0fb26742ffe4eeef
- https://github.com/team-alembic/ash_authentication/commit/fcaeb73f76f8f2e9aef8bf637690d2a20dd97596
- https://github.com/team-alembic/ash_authentication_phoenix/commit/0135217e34e621dac79ae3d9559aeee49304b0aa
- https://github.com/team-alembic/ash_authentication_phoenix/commit/a3253fb4fc7145aeb403537af1c24d3a8d51ffb1
- https://github.com/team-alembic/ash_authentication_phoenix/commit/f7ab005a2aac09707a25521653c94893d328cc52
- https://github.com/team-alembic/ash_authentication
- https://github.com/team-alembic/ash_authentication_phoenix
Affected packages
Git / github.com/team-alembic/ash_authentication
Affected ranges
- Type
- GIT
- Repo
- https://github.com/team-alembic/ash_authentication
- Events
-
IntroducedFixedIntroducedFixedFixedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "introduced": "4.9.1" }, { "fixed": "4.15.0" }, { "introduced": "5.0.0-rc.0" }, { "fixed": "5.0.0-rc.14" } ], "source": [ "DESCRIPTION", "REFERENCES" ] }
- Type
- GIT
- Repo
- https://github.com/team-alembic/ash_authentication_phoenix
- Events
-
IntroducedFixedIntroducedFixedFixedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "introduced": "2.10.0" }, { "fixed": "2.17.4" }, { "introduced": "3.0.0-rc.0" }, { "fixed": "3.0.0-rc.11" } ], "source": [ "DESCRIPTION", "REFERENCES" ] }