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authentik/website/docs/security/cves/CVE-2023-39522.md
Tana M Berry 6d5172d18a website: latest PR for new Docs structure (#11639)
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This reverts commit b99a4842a9.

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Signed-off-by: Jens Langhammer <jens@goauthentik.io>
Signed-off-by: Marc 'risson' Schmitt <marc.schmitt@risson.space>
Co-authored-by: Tana M Berry <tana@goauthentik.com>
Co-authored-by: Jens Langhammer <jens@goauthentik.io>
Co-authored-by: Marc 'risson' Schmitt <marc.schmitt@risson.space>
2024-10-09 09:33:40 -05:00

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Markdown

# CVE-2023-39522
_Reported by [@markrassamni](https://github.com/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](mailto:security@goauthentik.io)