CVE-2026-15927mediumCWE-918

CVE-2026-15927: medium-severity vulnerability in Red Hat mirror registry for Red Hat OpenShift 2

Quay: mirror-registry: ssrf: repo-level mirror accepts external_reference without url validation

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.8epss 0.6%
A flaw was found in Red Hat Quay's repository-level mirror configuration feature. The POST and PUT handlers in endpoints/api/mirror.py accept an external_reference parameter without SSRF validation, unlike the organization-level mirror handlers which apply validate_external_registry_url(). A repository administrator can supply a crafted hostname that causes the Quay mirror worker to make requests via Skopeo to internal network services, cloud metadata endpoints, or other resources not intended to be reachable from the Quay application.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
Affected products
Red Hat · mirror registry for Red Hat OpenShift 2Red Hat · Red Hat Quay 3.10Red Hat · Red Hat Quay 3.12Red Hat · Red Hat Quay 3.14Red Hat · Red Hat Quay 3.15Red Hat · Red Hat Quay 3.16Red Hat · Red Hat Quay 3.17Red Hat · Red Hat Quay 3.9
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