GHSA-9RPM-RWWC-XW43

Vulnerability from github – Published: 2026-07-21 06:31 – Updated: 2026-09-22 18:33
VLAI
Details

A flaw was found in Red Hat Quay's repository-level mirror configuration feature. The POST and PUT handlers in endpoints/api/mirror.py accept an external_reference parameter without SSRF validation, unlike the organization-level mirror handlers which apply validate_external_registry_url(). A repository administrator can supply a crafted hostname that causes the Quay mirror worker to make requests via Skopeo to internal network services, cloud metadata endpoints, or other resources not intended to be reachable from the Quay application.

Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-15927"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-21T06:16:28Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in Red Hat Quay\u0027s repository-level mirror configuration\nfeature. The POST and PUT handlers in endpoints/api/mirror.py accept an\nexternal_reference parameter without SSRF validation, unlike the\norganization-level mirror handlers which apply validate_external_registry_url().\nA repository administrator can supply a crafted hostname that causes the Quay\nmirror worker to make requests via Skopeo to internal network services, cloud\nmetadata endpoints, or other resources not intended to be reachable from the\nQuay application.",
  "id": "GHSA-9rpm-rwwc-xw43",
  "modified": "2026-09-22T18:33:03Z",
  "published": "2026-07-21T06:31:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15927"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:50931"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:52968"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:53520"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:54395"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:63307"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:69255"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:70267"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-15927"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2501256"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}



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