Description
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.
Affected products
redhat: mirror registry for red hat openshift
References2
- access.redhat.com/security/cve/CVE-2025-14243 Vendor Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2419829 Issue TrackingVendor Advisory
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - EPSS — exploit probability
- 0% percentile: 22 · as of 12 November 2026
- CWE
- CWE-209
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.