{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.4.3"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "76e6e9a0a1cc13b7d945c9809860ac3736403164"
            }
          ],
          "repo": "https://github.com/loft-sh/loft",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-x7cq-v3h6-426c"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42457.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "4.5.0-alpha.0"
          },
          {
            "fixed": "4.5.5"
          },
          {
            "introduced": "4.6.0-alpha.1"
          },
          {
            "fixed": "4.6.2"
          },
          {
            "introduced": "4.7.0-alpha.0"
          },
          {
            "fixed": "4.7.1"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "vCluster Platform provides a Kubernetes platform for managing virtual clusters, multi-tenancy, and cluster sharing. Prior to 4.4.3, 4.5.5, 4.6.2, 4.7.1, and 4.8.0, there is a Stored XSS attack vulnerability via the name field of a templateRef. This can lead to the execution of arbitrary external scripts within the platform's browser context. In the worst case, a malicious user could potentially create a new Global-Admin user, bypassing other security restrictions. The attacker needs the ability to create namespaces. This vulnerability is fixed in 4.4.3, 4.5.5, 4.6.2, 4.7.1, and 4.8.0.",
  "id": "CVE-2026-42457",
  "modified": "2026-08-12T03:51:43.361595310Z",
  "published": "2026-05-14T14:48:05.096Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42457.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/loft-sh/loft/security/advisories/GHSA-x7cq-v3h6-426c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42457"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "vCluster Platform: Stored XSS can lead to privilege escalation"
}