CVE WatchSep 10, 2026

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

CVSS

5.2

Medium

EPSS

0.3%

p25

KEV

—

Exploit Today

0-100

Published: Apr 8, 2026 · Last modified: Sep 10, 2026 · CWE-918

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-08-172026-09-14

Technical description

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.

Official references

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