CVE-2026-32591 — MEDIUM (5.2)

Vulnerability 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.

CVSS Score

5.2

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Redhat	Mirror Registry For Red Hat Openshift	-
Redhat	Quay	3.0.0

Related Weaknesses (CWE)

CWE-918

References

https://access.redhat.com/errata/RHSA-2026:19375
https://access.redhat.com/security/cve/CVE-2026-32591Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2446965Issue TrackingVendor Advisory

FAQ

What is CVE-2026-32591?

CVE-2026-32591 is a vulnerability with a CVSS score of 5.2 (MEDIUM). 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 speci...

How severe is CVE-2026-32591?

CVE-2026-32591 has been rated MEDIUM with a CVSS base score of 5.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-32591?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Mirror Registry For Red Hat Openshift, Redhat Quay.