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CVE-2025-53942

Reported by @pascalwei

Insufficient check for account active status when authenticating with OAuth/SAML Sources​

Summary​

Deactivated users that had either enrolled via OAuth/SAML or had their account connected to an OAuth/SAML account can still partially access authentik even if their account is deactivated. They end up in a half-authenticated state where they cannot access the API but crucially they can authorize applications if they know the URL of the application.

Patches​

authentik 2025.4.4 and 2025.6.4 fix this issue.

Workarounds​

Adding an expression policy to the user login stage on the respective authentication flow with the expression of

return request.context["pending_user"].is_active

This expression will only activate the user login stage when the user is active.

For more information​

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