authentik is an open-source identity provider. Prior to 2026.2.7, 2026.5.7, and 2026.8.2, an account with delegated permission to manage a group, group membership, or a user can grant superuser status to an account or assign an existing role to a group without holding the permissions that gate those privileges. Group hierarchy checks do not consistently account for superuser status inherited from ancestor groups, and role assignment to a group lacks the required authorization check.
Only deployments that delegate these management capabilities to accounts that are not full administrators are affected. This issue is fixed in versions 2026.2.7, 2026.5.7, and 2026.8.2.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 15
https://docs.goauthentik.io/releases/2026.2#fixed-in-202627
security-advisories@github.com
https://docs.goauthentik.io/releases/2026.5#fixed-in-202657
security-advisories@github.com
https://docs.goauthentik.io/releases/2026.8#fixed-in-202682
security-advisories@github.com
https://github.com/goauthentik/authentik/commit/5f95b86f6f70c3bd8c625a4f9ae474e…
security-advisories@github.com
https://github.com/goauthentik/authentik/commit/67317f66f1b7eb16f2a26bf550dfd73…
security-advisories@github.com
https://github.com/goauthentik/authentik/commit/67e470dde8c81a40ee27ec6e1784623…
security-advisories@github.com
https://github.com/goauthentik/authentik/commit/898e4e4fa070642a3541a376af0de64…
security-advisories@github.com
https://github.com/goauthentik/authentik/pull/25956
security-advisories@github.com
https://github.com/goauthentik/authentik/pull/25961
security-advisories@github.com
https://github.com/goauthentik/authentik/pull/25966
security-advisories@github.com
https://github.com/goauthentik/authentik/pull/25971
security-advisories@github.com
https://github.com/goauthentik/authentik/releases/tag/version/2026.2.7
security-advisories@github.com
https://github.com/goauthentik/authentik/releases/tag/version/2026.5.7
security-advisories@github.com
https://github.com/goauthentik/authentik/releases/tag/version/2026.8.2
security-advisories@github.com
https://github.com/goauthentik/authentik/security/advisories/GHSA-h6c5-mpvq-j4jc
security-advisories@github.com