Vulnerability · Published Apr 8, 2026 · Assigned by redhat
CVE-2025-14243Mirror-registry: openshift mirror registry: user enumeration via authentication error messages
Medium 5.3
In plain English
A medium-severity security flaw in mirror registry for Red Hat OpenShift from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 78.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | mirror registry for Red Hat OpenShift | see references |
| Red Hat | mirror registry for Red Hat OpenShift 2 | see references |
Weakness: CWE-209 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- https://access.redhat.com/security/cve/CVE-2025-14243 vdb-entry, x_refsource_REDHAT
- RHBZ#2419829 issue-tracking, x_refsource_REDHAT