CVE-2026-32591

Summary

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.

Affected Software

Weaknesses

• CWE-918: Server-Side Request Forgery (SSRF)

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

mirror-registry: quay: server-side request forgery in proxy cache upstream registry configuration

Additional References

• https://access.redhat.com/security/cve/CVE-2026-32591
• https://bugzilla.redhat.com/show_bug.cgi?id=2446965
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32591.json
• https://access.redhat.com/errata/RHSA-2026:24833

References

• https://access.redhat.com/errata/RHSA-2026:24833
• https://access.redhat.com/security/cve/CVE-2026-32591
• https://bugzilla.redhat.com/show_bug.cgi?id=2446965

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