CVE-2025-64521
4.8 · MEDIUMOverview
CVE-2025-64521 is a medium-severity vulnerability affecting goauthentik authentik. It was published on November 19, 2025 and has a CVSS 3.1 base score of 4.8 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from goauthentik. Update authentik to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| goauthentik | authentik | >= 2025.8.0, < 2025.8.5 | Affected |
Frequently Asked Questions
What is CVE-2025-64521?
CVE-2025-64521 is a medium-severity vulnerability affecting goauthentik authentik. It was published on November 19, 2025 and has a CVSS 3.1 base score of 4.8 (MEDIUM).
How severe is CVE-2025-64521?
This vulnerability has a CVSS 3.1 base score of 4.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-64521?
Check the references section for vendor advisories and patches from goauthentik. Update authentik to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-64521?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-64521 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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