FKIE_CVE-2026-32591

Vulnerability from fkie_nvd - Published: 2026-04-08 18:26 - Updated: 2026-07-22 16:17
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
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
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:24833
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:40262
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:41031
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:41066
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:42146
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:42796
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:43052
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-32591Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2446965Issue Tracking, Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:24833
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:40262
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:41031
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:41066
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:42146
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:42796
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/security/cve/CVE-2026-32591Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://bugzilla.redhat.com/show_bug.cgi?id=2446965Issue Tracking, Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32591.json
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
To clipboard 

{
  "affected": [
    {
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            }
          ]
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          "product": "mirror registry for Red Hat OpenShift 2",
          "vendor": "Red Hat"
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          "packageName": "openshift/mirror-registry-rhel8",
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          "vendor": "Red Hat"
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      ],
      "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",
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              "matchCriteriaId": "281E6AA4-1E08-488F-BA7A-F0BE7CF42A5B",
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          "negate": false,
          "operator": "OR"
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  "cveTags": [],
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      "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."
    }
  ],
  "id": "CVE-2026-32591",
  "lastModified": "2026-07-22T16:17:17.167",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.2,
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          "options": [
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          "role": "CISA Coordinator",
          "timestamp": "2026-04-10T20:34:13.210994Z",
          "version": "2.0.3"
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  "published": "2026-04-08T18:26:00.107",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary"
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  ]
}



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Tags
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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.


Detection rules are retrieved from Rulezet.