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CVE-2023-39522

MEDIUM
Published 2023-08-29T17:23:37.092Z
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CVSS Score

V3.1
5.3
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.005
probability
of exploitation in the wild

There is a 0.5% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.655
Higher than 65.5% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
LOW
Integrity
NONE
Availability
NONE

Description

goauthentik is an open-source Identity Provider. In affected versions using a recovery flow with an identification stage an attacker is able to determine if a username exists. Only setups configured with a recovery flow are impacted by this. Anyone with a user account on a system with the recovery flow described above is susceptible to having their username/email revealed as existing. 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. This issue has been addressed in versions 2023.5.6 and 2023.6.2. Users are advised to upgrade. There are no known workarounds for this issue.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

goauthentik

authentik

Affected Versions:

>= 2023.6.0, < 2023.6.2 < 2023.5.6

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed MODERATE

Username enumeration attack in goauthentik

GHSA-vmf9-6pcv-xr87

Advisory Details

## Summary Using a recovery flow with an identification stage an attacker is able to determine if a username exists. ## Impact Only setups configured with a recovery flow are impacted by this. Anyone with a user account on a system with the recovery flow described above is susceptible to having their username/email revealed as existing. ## 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. The invalid and valid usernames should both show the same message and always send an email. Article for reference here: https://postmarkapp.com/guides/password-reset-email-best-practices#how-to-make-sure-your-password-reset-emails-are-secure ### For more information If you have any questions or comments about this advisory: - Email us at [[email protected]](mailto:[email protected])

Affected Packages

npm @goauthentik/api
ECOSYSTEM: ≥2023.6.0 <2023.6.2
npm @goauthentik/api
ECOSYSTEM: ≥0 <2023.5.6

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

WEB https://github.com/goauthentik/authentik/security/advisories/GHSA-vmf9-6pcv-xr87
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-39522
WEB https://github.com/goauthentik/authentik/commit/aa874dd92a770d5f8cd8f265b7cdd31cd73a4599
PACKAGE https://github.com/goauthentik/authentik

Advisory provided by GitHub Security Advisory Database. Published: August 29, 2023, Modified: August 29, 2023

References

https://github.com/goauthentik/authentik/security/advisories/GHSA-vmf9-6pcv-xr87
https://github.com/goauthentik/authentik/commit/aa874dd92a770d5f8cd8f265b7cdd31cd73a4599
Published: 2023-08-29T17:23:37.092Z
Last Modified: 2024-10-01T20:19:58.448Z
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