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.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 6.8 · red hatNVD modified 2026-11-01 04:52
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 9
- https://access.redhat.com/errata/RHSA-2026:50931 vendor-advisory, x_refsource_redhat
- https://access.redhat.com/errata/RHSA-2026:52968 vendor-advisory, x_refsource_redhat
- https://access.redhat.com/errata/RHSA-2026:53520 vendor-advisory, x_refsource_redhat
- https://access.redhat.com/errata/RHSA-2026:54395 vendor-advisory, x_refsource_redhat
- https://access.redhat.com/errata/RHSA-2026:63307 vendor-advisory, x_refsource_redhat
- https://access.redhat.com/errata/RHSA-2026:69255 vendor-advisory, x_refsource_redhat
- https://access.redhat.com/errata/RHSA-2026:70267 vendor-advisory, x_refsource_redhat
- https://access.redhat.com/security/cve/CVE-2026-15927 vdb-entry, x_refsource_redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2501256 issue-tracking, x_refsource_redhat