{"cve":"CVE-2025-64521","nvd":{"published":"2025-11-19T17:15:52.033","modified":"2026-10-18T20:10:00.110","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","score":4.8},"cwes":["CWE-289"],"references":["https://github.com/goauthentik/authentik/commit/9dbdfc3f1be0f1be36f8efce2442897b2a54a71c","https://github.com/goauthentik/authentik/security/advisories/GHSA-xr73-jq5p-ch8r"],"products":["goauthentik:authentik"],"source":"nvd","synced_at":"2026-10-19T22:16:02.354564667+00:00"},"epss":{"cve":"CVE-2025-64521","score":0.00234,"percentile":0.14145,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-xr73-jq5p-ch8r","url":"https://osv.dev/vulnerability/GHSA-xr73-jq5p-ch8r","summary":"authentik allows a deactivated Service account to authenticate to OAuth","modified":"2026-07-13T07:26:54.452545220Z","packages":[{"ecosystem":"Go","name":"goauthentik.io","purl":"pkg:golang/goauthentik.io","ranges":["<0.0.0-20251119140106-9dbdfc3f1be0"],"fixed":["0.0.0-20251119140106-9dbdfc3f1be0"]}]},{"id":"GO-2025-4137","url":"https://osv.dev/vulnerability/GO-2025-4137","summary":"authentik allows a deactivated Service account to authenticate to OAuth in goauthentik.io","modified":"2026-07-13T07:26:54.452545220Z","packages":[{"ecosystem":"Go","name":"goauthentik.io","purl":"pkg:golang/goauthentik.io","ranges":["all versions"],"fixed":[]}]},{"id":"PYSEC-2025-237","url":"https://osv.dev/vulnerability/PYSEC-2025-237","summary":"","modified":"2026-07-13T07:26:54.452545220Z","packages":[{"ecosystem":"PyPI","name":"authentik-client","purl":"pkg:pypi/authentik-client","ranges":[">=2025.8.0 <2025.8.5",">=2025.10.0 <2025.10.2"],"fixed":["2025.8.5","2025.10.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}