CVE-2025-64708: authentik invitation expiry is delayed by at least 5 minutes

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-11-19 · updated 2026-10-18
Weakness: CWE-613

Description

authentik is an open-source Identity Provider. Prior to versions 2025.8.5 and 2025.10.2, in previous authentik versions, invitations were considered valid regardless if they are expired or not, thus relying on background tasks to clean up expired ones. In a normal scenario this can take up to 5 minutes because the cleanup of expired objects is scheduled to run every 5 minutes. However, with a large amount of tasks in the backlog, this might take longer. authentik versions 2025.8.5 and 2025.10.2 fix this issue. A workaround involves creating a policy that explicitly checks whether the invitation is still valid, and then bind it to the invitation stage on the invitation flow, and denying access if the invitation is not valid.

Affected products

goauthentik authentik: from 2025.8.0 before 2025.8.5; from 2025.10.0 before 2025.10.2 — fixed in 2025.10.2, 2025.8.5

How to fix

Upgrade to a fixed version: goauthentik authentik 2025.10.2, 2025.8.5. Check the vendor advisory for mitigations.

References

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