CVE Catalog

CVE-2026-32591

MediumCVSS 5.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.33%

26th percentile - higher than 26% of all known CVEs

Summary

In Red Hat Quay, the proxy cache configuration feature does not verify that the specified upstream registry hostname points to a legitimate external service. An organization administrator can supply a crafted hostname, forcing 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.

Risk Assessment

An attacker with organization administrator privileges can exploit this vulnerability to scan the internal network, access sensitive data, or launch attacks against other internal systems.

Recommendation

It is recommended to update Red Hat Quay to a patched version and implement hostname validation in the proxy cache configuration.

Other vulnerabilities in Red Hat Quay

See all
Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS