Kite has an authenticated cluster RBAC bypass in /api/v1/overview

{
  "id": "09b43a3d80656d24fa95ddcb4ae78e022fb717eeb6d1e17333ecf2cbe47b2af2",
  "url": "https://osv.dev/vulnerability/CVE-2026-53487",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Kite has an authenticated cluster RBAC bypass in /api/v1/overview",
    "summary": "Kite is a Kubernetes dashboard. Prior to version 0.12.3, authenticated Kite users with any role can request `/api/v1/overview` for a cluster that their roles do not permit by selecting that cluster with `x-cluster-name`. The overview route is registered before `middleware.RBACMiddleware()` and `GetOverview` only checks `len(user.Roles) > 0`, so it returns aggregate Kubernetes inventory and capacity data from unauthorized clusters. Version 0.12.3 fixes the issue.",
    "evidence": "osv:CVE-2026-53487",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-53487",
      "aliases": [
        "CVE-2026-53487",
        "GHSA-gvhc-wv3v-7pf8",
        "GO-2026-5941"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/kite-org/kite",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "a011abe757ada6a5834c3ad3e8f63d7495994ca8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.12.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.12.3"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.12.2",
            "v0.12.1",
            "v0.12.0",
            "v0.11.0",
            "v0.10.0",
            "v0.9.0",
            "v0.8.1",
            "v0.8.0",
            "v0.7.8",
            "v0.7.7",
            "v0.7.6",
            "v0.7.5",
            "v0.7.4",
            "v0.7.3",
            "v0.7.2",
            "v0.7.1",
            "v0.7.0",
            "v0.6.9",
            "v0.6.8",
            "v0.6.7",
            "v0.6.6",
            "v0.6.5",
            "v0.6.4",
            "v0.6.3",
            "v0.6.2",
            "v0.6.1",
            "v0.6.0",
            "v0.5.0",
            "helm-chart-0.5.0",
            "v0.4.1",
            "helm-chart-0.4.1",
            "v0.4.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53487.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.859876881Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53487.json",
        "https://github.com/kite-org/kite/security/advisories/GHSA-gvhc-wv3v-7pf8",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-53487"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53487.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-53487",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 500026,
  "published_at": "2026-08-21T21:35:41.451+00:00"
}