769 B
769 B
CVE-2023-39522
Reported by @markrassamni
Username enumeration attack
Summary
Using a recovery flow with an identification stage an attacker is able to determine if a username exists.
Patches
authentik 2023.5.6 and 2023.6.2 fix this issue.
Impact
Only setups configured with a recovery flow are impacted by this.
Details
An attacker can easily enumerate and check users' existence using the recovery flow, as a clear message is shown when a user doesn't exist. Depending on configuration this can either be done by username, email, or both.
For more information
If you have any questions or comments about this advisory:
- Email us at security@goauthentik.io