User Enumeration Vulnerability in OpenShift Mirror Registry by Red Hat
CVE-2025-14243

5.3MEDIUM

Key Information:

Vendor

Red Hat
Status
Mirror Registry For Red Hat Openshift
Mirror Registry For Red Hat Openshift 2
Vendor
CVE Published:
8 April 2026

What is CVE-2025-14243?

A vulnerability in OpenShift Mirror Registry allows unauthenticated, remote attackers to exploit error messages during authentication failures and account creation processes, enabling them to enumerate valid usernames and associated email addresses. This security flaw poses significant risks as it could facilitate targeted attacks or unauthorized access attempts.

References

https://access.redhat.com/security/cve/CVE-2025-14243
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2419829
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Antony Di Scala (Lloyds Banking) and Michael Whale (Lloyds BankingLloyds Banking) for reporting this issue.
.