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CVE Record

CVE-2026-32591: Mirror-registry: quay: server-side request forgery in proxy cache upstream registry configuration

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.

MediumCVSS 5.2Not KEV-listedUpdated
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Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CWE-918: Information exposure and cloud metadata lookup

Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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description · low confidence lookup

Cloud metadata behavior lookup

The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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CVE-2026-32591 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.2 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
7Timeline events
2ADP providers
13Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.2CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N0.94.2redhat
5.2CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N0.94.2redhat-SADP

Vulnerability scoring details

Base CVSS 3.1 score

5.2Medium
CVSS 3.1 vector shape for CVE-2026-32591Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. ADP timelineredhat-SADP

    Reported to Red Hat.

  3. Source timelineredhat

    Reported to Red Hat.

  4. ADP timelineredhat-SADP

    Made public.

  5. Source timelineredhat

    Made public.

  6. CVE publishedCVE Program

    The CVE record was published.

  7. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
redhat-SADPmirror-registry: quay: server-side request forgery in proxy cache upstream registry configuration
other:Red Hat severity ratingcvssV3_1
  • 2026-03-12T15:09:38.210Z: Reported to Red Hat.
  • 2026-04-08T00:00:00.000Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Red HatRed Hat Quay 3.10quay/quay-rhel8, 1783750447affected
Red HatRed Hat Quay 3.12quay/quay-rhel8, 1783751865affected
Red HatRed Hat Quay 3.12quay/quay-rhel8, 1784353904affected
Red HatRed Hat Quay 3.14quay/quay-rhel8, 1788593843affected
Red HatRed Hat Quay 3.15quay/quay-rhel8, 1784351966affected
Red HatRed Hat Quay 3.16quay/quay-rhel9, 1783955846affected
Red HatRed Hat Quay 3.17quay/quay-rhel9, 1780604033affected
Red HatRed Hat Quay 3.18quay/quay-rhel9, 1784987273affected
Red HatRed Hat Quay 3.9quay/quay-rhel8, 1784125838affected
Red Hatmirror registry for Red Hat OpenShiftopenshift/mirror-registry-rhel8affected
Red Hatmirror registry for Red Hat OpenShift 2openshift/mirror-registry-rhel8affected
Weakness

CWE details

CWE-918

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-918 · source CWE mapping

Server-Side Request Forgery (SSRF)

Server-Side Request Forgery (SSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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