5.2 Medium

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

CVE-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 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.

Assessment

CVSS: 5.2 (v3.1)
Severity: Medium
EPSS: 0.33% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 8 April 2026
Last updated: 1 November 2026
Affected: Red Hat
Assigner: redhat

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N

At the source

EUVD (ENISA)

References

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