{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "96d5517a2693ff5def451dee7d6b9d1baeb281f8"
            }
          ],
          "repo": "https://github.com/openfga/helm-charts",
          "type": "GIT"
        },
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.18.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a2e0dbefc3e01a95c785f81a3563bc6571b08b11"
            },
            {
              "fixed": "81089a31698505b4d5f01311c04e83b9adfcf383"
            }
          ],
          "repo": "https://github.com/openfga/openfga",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-cf98-j28v-49v6"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-178"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55170.json"
  },
  "details": "OpenFGA is an authorization/permission engine built for developers. Prior to 1.18.0, when MySQL is being used as the datastore and authorization decisions rely on case-sensitive user strings, the tuple, changelog, and authorization_model identifier columns can compare case-distinct values such as user:Alice and user:alice as equivalent, causing two distinct check requests to return the same response. This issue is fixed in 1.18.0.",
  "id": "CVE-2026-55170",
  "modified": "2026-07-12T03:55:08.319283303Z",
  "published": "2026-07-09T21:04:28.713Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openfga/openfga/releases/tag/v1.18.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55170.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/openfga/openfga/security/advisories/GHSA-cf98-j28v-49v6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55170"
    },
    {
      "type": "FIX",
      "url": "https://github.com/openfga/helm-charts/commit/96d5517a2693ff5def451dee7d6b9d1baeb281f8"
    },
    {
      "type": "FIX",
      "url": "https://github.com/openfga/openfga/commit/a2e0dbefc3e01a95c785f81a3563bc6571b08b11"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenFGA MySQL backend: case-insensitive collation on identifier columns causes incorrect authorization decisions"
}