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Findings

CVE-2026-32591

A flaw was found in Red Hat Quay's Proxy Cache configuration feature.

Published Apr 8, 2026 · updated Sep 22, 2026 · redhat mirror registry for red hat openshift

A flaw was found in Red Hat Quay's Proxy Cache configuration feature. When an organization administrator configures an upstream registry for proxy caching, Quay makes a network connection to the specified registry hostname without verifying that it points to a legitimate external service. An attacker with organization administrator privileges could supply a crafted hostname to force the Quay server to make requests to internal network services, cloud infrastructure endpoints, or other resources that should not be accessible from the Quay application.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 8, 2026 · NIST NVD

    Detected

    A flaw was found in Red Hat Quay's Proxy Cache configuration feature. When an organization administrator configures an upstream registry for proxy caching, Quay makes a network connection to the specified registry hostname without verifying that it points to a legitimate external service. An attacker with organization administrator privileges could supply a crafted hostname to force the Quay serve

  2. Sep 22, 2026 · NIST NVD

    Updated

    A flaw was found in Red Hat Quay's Proxy Cache configuration feature. When an organization administrator configures an upstream registry for proxy caching, Quay makes a network connection to the specified registry hostname without verifying that it points to a legitimate external service. An attacker with organization administrator privileges could supply a crafted hostname to force the Quay serve

Affected

  • cpe redhat/mirror registry for red hat openshiftversion unspecified
  • cpe redhat/mirror registry for red hat openshift2.0
  • cpe redhat/quay3.0.0

Sources

  • CVE.orgVulnerability recordCVE-2026-32591

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-32591

    A flaw was found in Red Hat Quay's Proxy Cache configuration feature. When an organization administrator configures an upstream registry for proxy caching, Quay makes a network connection to the specified registry hostname without verifying that it points to a legitimate external

    nvd.nist.gov

References