OpenShift Mirror Registry Unauth Auth Failure Exposes Username/Email
CVE-2025-14243 Published on April 8, 2026
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.
Vulnerability Analysis
CVE-2025-14243 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Timeline
Reported to Red Hat.
Made public. 121 days later.
Weakness Type
Generation of Error Message Containing Sensitive Information
The software generates an error message that includes sensitive information about its environment, users, or associated data.
Products Associated with CVE-2025-14243
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