{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.4.7"
              },
              {
                "introduced": "2.0.11"
              },
              {
                "last_affected": "2.0.11"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "introduced": "ad9709f865b09b68798fb1ac375b484a8cc1d892"
            },
            {
              "fixed": "ad9709f865b09b68798fb1ac375b484a8cc1d892"
            }
          ],
          "repo": "https://github.com/getgrav/grav",
          "type": "GIT"
        }
      ],
      "versions": [
        "2.0.11"
      ]
    }
  ],
  "aliases": [
    "GHSA-pc8m-jxvh-vmrc"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72831.json"
  },
  "details": "The Flex Objects plugin (through 1.4.6, tested with Grav 2.0.11) contains an incorrect authorization vulnerability in its Flex Objects API. FlexApiController::update() checks only the general Flex directory permission and does not apply the additional target/field/super-admin checks enforced by the dedicated Users and Groups API controllers. An authenticated account with api.access, admin.login, and users.update permissions (but without api.users.write or admin.super) can use the generic /api/v1/flex-objects/user-accounts endpoint to change a super administrator's password, or the /api/v1/flex-objects/user-groups endpoint to grant its group admin.super, resulting in full site takeover. Fixed in Flex Objects 1.4.7.",
  "id": "CVE-2026-72831",
  "modified": "2026-08-16T03:31:23.433275318Z",
  "published": "2026-08-14T11:35:37.801Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72831.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/getgrav/grav/security/advisories/GHSA-pc8m-jxvh-vmrc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72831"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/grav-through-authentication-bypass-via-flex-objects"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getgrav/grav/commit/0b384f5b0e73b1ad9dd29c70185407895ea3b09f"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getgrav/grav/commit/8071c10bc3a4743a4b8cf003dfb1644d6680c2ea"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getgrav/grav/commit/a0bf26f7e5d7a98894b7cd2b8c5afe419b264e53"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getgrav/grav/commit/ad9709f865b09b68798fb1ac375b484a8cc1d892"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Grav through 2.0.11 Authentication Bypass via Flex Objects"
}