CVE-2025-14243
Mirror-registry: openshift mirror registry: user enumeration via authentication error messages
A flaw was found in the OpenShift Mirror Registry. This vulnerability allows an unauthenticated, remote attacker to enumerate valid usernames and email addresses via different error messages during authentication failures and account creation.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Mirror-registry: openshift mirror registry: user enumeration via authentication error messages
A flaw was found in the OpenShift Mirror Registry. This vulnerability allows an unauthenticated, remote attacker to enumerate valid usernames and email addresses via different error messages during authentication failures and account creation.
- Record
CVE-2025-14243- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-209
- Updated
- 2026-11-02
EUVDEUVD-2025-209308
A flaw was found in the OpenShift Mirror Registry. This vulnerability allows an unauthenticated, remote attacker to enumerate valid usernames and email addresses via different error messages during authentication failures and account creation.
- Record
EUVD-2025-209308- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-v9gq-365f-qxxw
A flaw was found in the OpenShift Mirror Registry. This vulnerability allows an unauthenticated,...
A flaw was found in the OpenShift Mirror Registry. This vulnerability allows an unauthenticated, remote attacker to enumerate valid usernames and email addresses via different error messages during authentication failures and account creation.
- Record
GHSA-v9gq-365f-qxxw- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-209
- Updated
- 2026-11-02
NVD
A flaw was found in the OpenShift Mirror Registry. This vulnerability allows an unauthenticated, remote attacker to enumerate valid usernames and email addresses via different error messages during authentication failures and account creation.
- Record
CVE-2025-14243- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-209
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-14243 is a medium vulnerability (CVSS 5.3) in Red Hat Mirror Registry For Red Hat Openshift, published April 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.29%, the 21st percentile. No source names a fixed version.