FKIE_CVE-2026-32591
Vulnerability from fkie_nvd - Published: 2026-04-08 18:26 - Updated: 2026-08-17 12:17
Severity
5.2 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N
5.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
5.2 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N
5.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
5.2 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| redhat | mirror_registry_for_red_hat_openshift | - | |
| redhat | mirror_registry_for_red_hat_openshift | 2.0 | |
| redhat | quay | 3.0.0 |
{
"affected": [
{
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{
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"cpes": [
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],
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"packageName": "quay/quay-rhel8",
"product": "Red Hat Quay 3.1",
"vendor": "Red Hat",
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"version": "1783750447",
"versionType": "rpm"
}
]
},
{
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],
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"version": "1783751865",
"versionType": "rpm"
}
]
},
{
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],
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"vendor": "Red Hat",
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}
]
},
{
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},
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]
},
{
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"cpes": [
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],
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"product": "Red Hat Quay 3.18",
"vendor": "Red Hat",
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{
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"version": "1784987273",
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}
]
},
{
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"cpes": [
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"product": "Red Hat Quay 3.9",
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{
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}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:mirror_registry:1"
],
"defaultStatus": "affected",
"packageName": "openshift/mirror-registry-rhel8",
"product": "mirror registry for Red Hat OpenShift",
"vendor": "Red Hat"
},
{
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"cpes": [
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],
"defaultStatus": "affected",
"packageName": "openshift/mirror-registry-rhel8",
"product": "mirror registry for Red Hat OpenShift 2",
"vendor": "Red Hat"
}
],
"source": "secalert@redhat.com"
},
{
"affectedData": [
{
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"cpes": [
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],
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"packageName": "quay/quay-rhel8",
"product": "Red Hat Quay 3.1",
"vendor": "Red Hat",
"versions": [
{
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"version": "1783750447",
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}
]
},
{
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"cpes": [
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],
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"packageName": "quay/quay-rhel8",
"product": "Red Hat Quay 3.12",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "1783751865",
"versionType": "rpm"
},
{
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"status": "unaffected",
"version": "1784353904",
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}
]
},
{
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"cpes": [
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],
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"product": "Red Hat Quay 3.15",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "1784351966",
"versionType": "rpm"
}
]
},
{
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"cpes": [
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],
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"packageName": "quay/quay-rhel9",
"product": "Red Hat Quay 3.16",
"vendor": "Red Hat",
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"status": "unaffected",
"version": "1783955846",
"versionType": "rpm"
}
]
},
{
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],
"defaultStatus": "affected",
"packageName": "quay/quay-rhel9",
"product": "Red Hat Quay 3.17",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "1780604033",
"versionType": "rpm"
}
]
},
{
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"vendor": "Red Hat",
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}
]
},
{
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],
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"vendor": "Red Hat",
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"version": "1784125838",
"versionType": "rpm"
}
]
},
{
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"cpes": [
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],
"defaultStatus": "affected",
"packageName": "openshift/mirror-registry-rhel8",
"product": "mirror registry for Red Hat OpenShift",
"vendor": "Red Hat"
},
{
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"cpes": [
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],
"defaultStatus": "affected",
"packageName": "openshift/mirror-registry-rhel8",
"product": "mirror registry for Red Hat OpenShift 2",
"vendor": "Red Hat"
}
],
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:redhat:mirror_registry_for_red_hat_openshift:-:*:*:*:*:*:*:*",
"matchCriteriaId": "63757310-FC5B-44E6-9211-36269827BC56",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:redhat:mirror_registry_for_red_hat_openshift:2.0:*:*:*:*:*:*:*",
"matchCriteriaId": "281E6AA4-1E08-488F-BA7A-F0BE7CF42A5B",
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},
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in Red Hat Quay\u0027s 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."
},
{
"lang": "es",
"value": "Se encontr\u00f3 un fallo en la caracter\u00edstica de configuraci\u00f3n de cach\u00e9 de proxy de Red Hat Quay. Cuando un administrador de organizaci\u00f3n configura un registro ascendente para el almacenamiento en cach\u00e9 de proxy, Quay realiza una conexi\u00f3n de red al nombre de host del registro especificado sin verificar que apunte a un servicio externo leg\u00edtimo. Un atacante con privilegios de administrador de organizaci\u00f3n podr\u00eda proporcionar un nombre de host manipulado para forzar al servidor Quay a realizar solicitudes a servicios de red internos, puntos finales de infraestructura en la nube u otros recursos que no deber\u00edan ser accesibles desde la aplicaci\u00f3n Quay."
}
],
"id": "CVE-2026-32591",
"lastModified": "2026-08-17T12:17:53.980",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.2,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 0.9,
"impactScore": 4.2,
"source": "secalert@redhat.com",
"type": "Secondary"
},
{
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N",
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},
"exploitabilityScore": 1.2,
"impactScore": 4.2,
"source": "nvd@nist.gov",
"type": "Primary"
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{
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"baseScore": 5.2,
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"privilegesRequired": "HIGH",
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"ssvcV203": [
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"options": [
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},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-10T20:34:13.210994Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-04-08T18:26:00.107",
"references": [
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"url": "https://access.redhat.com/errata/RHSA-2026:24833"
},
{
"source": "secalert@redhat.com",
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{
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{
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{
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{
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{
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{
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{
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{
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"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32591.json"
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],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-918"
}
],
"source": "secalert@redhat.com",
"type": "Secondary"
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{
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"value": "CWE-918"
}
],
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"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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