CVE-2026-32591Network attack vector

Internal network access via unchecked upstream hostname

Published Apr 8, 2026 · Updated Apr 8, 2026

SSRF in Red Hat Quay Proxy Cache allows remote authenticated users to reach internal resources through a crafted upstream registry hostname. The proxy-cache configuration accepts the administrator-supplied hostname and makes a server-side connection without validating that the destination is an external registry. Organization administrator privileges and proxy caching are required; the same Quay component is included in Mirror Registry for Red Hat OpenShift.

CVSS severity5.2
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Red Hat Quay Proxy Cache allows remote authenticated users to reach internal resources through a crafted upstream registry hostname. The proxy-cache configuration accepts the administrator-supplied hostname and makes a server-side connection without validating that the destination is an external registry. Organization administrator privileges and proxy caching are required; the same Quay component is included in Mirror Registry for Red Hat OpenShift.

The record

CVE
CVE-2026-32591
Published
Apr 8, 2026
Updated
Apr 8, 2026
Vendor
389 Directory Server
Product
Red Hat Quay
Classifications
CWE-918, CAPEC-664
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

389 Directory Server · Red Hat QuayAffected versions are unavailable in this record.
389 Directory Server · Mirror Registry for Red Hat OpenShiftAffected versions are unavailable in this record.

Published CVSS scores

5.2Red Hat, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N
5.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CAPEC-664Server Side Request Forgery

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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