{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.16.0"
              },
              {
                "fixed": "0.16.1"
              },
              {
                "introduced": "0.15.0"
              },
              {
                "fixed": "0.15.6"
              },
              {
                "introduced": "0.14.0"
              },
              {
                "fixed": "0.14.10"
              },
              {
                "introduced": "0.13.0"
              },
              {
                "fixed": "0.13.15"
              },
              {
                "introduced": "0.12.0"
              },
              {
                "fixed": "0.12.19"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "c1a4325041578226f4f333b9f05d651ee4b03577"
            },
            {
              "fixed": "5823543a3d33952b1c7868eb035ad8e15db420fc"
            },
            {
              "introduced": "c63dc4bb52acb88fea50fe1b5f20db7f3ca6c9d9"
            },
            {
              "fixed": "ea6c08e5a3a77f34effe4136656acb88556ffd78"
            },
            {
              "introduced": "53de8d76a46c737f4b055dd1a7f2b7ac682537c5"
            },
            {
              "fixed": "98e6b68903f0bd96c1c289838ffaaf27a4b54b1b"
            },
            {
              "introduced": "e0324f2d4c06dad05a298622a1276ea596367b6a"
            },
            {
              "fixed": "bde240cf8eb3122dd2a7e65849e8e30e74d1bdff"
            },
            {
              "introduced": "3d1fa6c06ff392c9fa66ca2f46831e2dae23bc16"
            },
            {
              "fixed": "3d1766d5b737501e0386d25558ebc87da867f77a"
            }
          ],
          "repo": "https://github.com/rancher/fleet",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-h9p5-fp5h-qpqr"
  ],
  "database_specific": {
    "cna_assigner": "suse",
    "cwe_ids": [
      "CWE-290",
      "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93538.json"
  },
  "details": "A cross-tenant authorization issue was discovered in SUSE Rancher Fleet. During agent-initiated cluster registration, cluster labels supplied by the registering agent, including labels in the reserved management.cattle.io/ namespace such as the cluster display name label, were applied to the resulting upstream Cluster object. Because Fleet resolves GitRepo and Bundle targets from those cluster labels, a party able to register a cluster into a Fleet workspace namespace shared with other tenants could cause its own cluster to satisfy targeting rules that administrators intended for a different cluster.\nThis affects SUSE Rancher Fleet 0.16 before 0.16.1, 0.15 before 0.15.6, 0.14 before 0.14.10, 0.13 before 0.13.15, 0.12 before 0.12.19 and older versions.",
  "id": "CVE-2026-93538",
  "modified": "2026-10-01T03:30:54.802481744Z",
  "published": "2026-09-28T14:10:21.720Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rancher/fleet/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93538.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93538"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Cross-tenant BundleDeployment and Secret disclosure via spoofed cluster labels during agent-initiated registration in Fleet"
}