Vulnerability in Goauthentik Authentik
CVE-2025-64521
authentik is an open-source Identity Provider. Prior to versions 2025.8.5 and 2025.10.2, when authenticating with client_id and client_secret to an OAuth provider, authentik creates a service account for the provider. In previous authentik versions, authentication for this account was possible even when the account was deactivated. Other permissions are correctly applied and federation with other providers still take assigned policies correctly into account. authentik versions 2025.8.5 and 2025.10.2 fix this issue. A workaround involves adding a policy to the application that explicitly checks if the service account is still valid, and deny access if not.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (11.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Goauthentik Authentik — versions < 2025.10.2, < 2025.8.5
Weakness classification (CWE)
References
- github.com/goauthentik/authentik/security/advisories/GHSA-xr73-jq5p-ch8r (Patch, Third Party Advisory)
- github.com/goauthentik/authentik/commit/9dbdfc3f1be0f1be36f8efce2442897b2a54a71c (Patch)
Frequently asked questions
- What is CVE-2025-64521?
- CVE-2025-64521 is a medium-severity vulnerability in Goauthentik Authentik, classified under CWE-289. CVSS score: 4.8/10. Published 2025-11-19.
- How severe is CVE-2025-64521?
- Medium severity. CVSS v3 base score is 4.8 out of 10.