{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.0.0-beta.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5a12f9be8314682c8713e569e330f11805d0a663"
            },
            {
              "fixed": "c66dfeb5ff679a1667678c6335eb9ff3255dfc47"
            },
            {
              "fixed": "d904efc33e03ebb597afde8d3368b28cf0423632"
            }
          ],
          "repo": "https://github.com/getgrav/grav",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-rr73-568v-28f8"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-269",
      "CWE-285",
      "CWE-639",
      "CWE-837"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42609.json"
  },
  "details": "Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a business logic vulnerability in the Grav Admin Panel allows a low-privileged user (with only user creation permissions) to overwrite existing accounts, including the primary administrator. By creating a new user with a username that already exists, the system updates the existing account's metadata and permissions instead of rejecting the request. This leads to a Denial of Service (DoS) on administrative functions and Privilege De-escalation of the root account. This vulnerability is fixed in 2.0.0-beta.2.",
  "id": "CVE-2026-42609",
  "modified": "2026-07-08T05:36:14.154181216Z",
  "published": "2026-05-11T15:03:38.296Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42609.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/getgrav/grav/security/advisories/GHSA-rr73-568v-28f8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42609"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getgrav/grav/commit/c66dfeb5ff679a1667678c6335eb9ff3255dfc47"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getgrav/grav/commit/d904efc33e03ebb597afde8d3368b28cf0423632"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Grav: Administrative Account Disruption and Privilege De-escalation via User Overwrite Logic"
}