CVE-2026-72534
Authentik Security authentik - Privilege Escalation
Description
A privilege escalation vulnerability in Authentik Security authentik through 2026.5.6 allows an attacker with a source-scoped SCIM provisioning token to gain superuser privileges by provisioning a SCIM group that matches an existing administrator group by name. The SCIM group ingest function adopts any existing group by name and replaces its membership without validating the source scope against the target group. An attacker can grant their provisioning token full IdP superuser access and lock out all existing administrators.
INFO
Published Date :
Aug. 11, 2026, 12:17 p.m.
Last Modified :
Oct. 24, 2026, 3:10 p.m.
Remotely Exploit :
No
Source :
309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Affected Products
The following products are affected by CVE-2026-72534
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Update Authentik to version 2026.5.7 or later.
- Review SCIM group provisioning configurations.
- Remove excess privileges from SCIM tokens.
- Monitor for unauthorized group changes.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-72534.
| URL | Resource |
|---|---|
| https://github.com/goauthentik/authentik |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72534 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-72534
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-72534 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72534 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Changed Translation Title: authentik Security, Description: Una vulnerabilidad de escalada de privilegios en Authentik Security authentik hasta 2026.5.6 permite a un atacante con un token de aprovisionamiento SCIM con ámbito de origen obtener privilegios de superusuario al aprovisionar un grupo SCIM que coincide con un grupo de administradores existente por nombre. La función de ingesta de grupos SCIM adopta cualquier grupo existente por nombre y reemplaza su membresía sin validar el ámbito de origen contra el grupo de destino. Un atacante puede otorgar a su token de aprovisionamiento acceso completo de superusuario de IdP y bloquear a todos los administradores existentes. Title: authentik Security, Description: Una vulnerabilidad de escalada de privilegios en Authentik Security authentik hasta 2026.5.6 permite a un atacante con un token de aprovisionamiento SCIM con ámbito de origen obtener privilegios de superusuario al aprovisionar un grupo SCIM que coincide con un grupo de administradores existente por nombre. La función de ingesta de grupos SCIM adopta cualquier grupo existente por nombre y reemplaza su membresía sin validar el ámbito de origen contra el grupo de destino. Un atacante puede otorgar a su token de aprovisionamiento acceso completo de superusuario de IdP y bloquear a todos los administradores existentes. -
CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: authentik Security, Description: Una vulnerabilidad de escalada de privilegios en Authentik Security authentik hasta 2026.5.6 permite a un atacante con un token de aprovisionamiento SCIM con ámbito de origen obtener privilegios de superusuario al aprovisionar un grupo SCIM que coincide con un grupo de administradores existente por nombre. La función de ingesta de grupos SCIM adopta cualquier grupo existente por nombre y reemplaza su membresía sin validar el ámbito de origen contra el grupo de destino. Un atacante puede otorgar a su token de aprovisionamiento acceso completo de superusuario de IdP y bloquear a todos los administradores existentes. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 11, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-72534', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-11T15:06:52.367762Z'} -
New CVE Received by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Aug. 11, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Authentik Security', 'product': 'authentik', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'custom', 'lessThanOrEqual': '2026.5.6'}]}] Added Description A privilege escalation vulnerability in Authentik Security authentik through 2026.5.6 allows an attacker with a source-scoped SCIM provisioning token to gain superuser privileges by provisioning a SCIM group that matches an existing administrator group by name. The SCIM group ingest function adopts any existing group by name and replaces its membership without validating the source scope against the target group. An attacker can grant their provisioning token full IdP superuser access and lock out all existing administrators. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-269 Added Reference https://github.com/goauthentik/authentik