Apache Cassandra: Privilege escalation via ADD IDENTITY authorization bypass

{
  "id": "9a644bbfbdb7d6caffd133e8b22897f8ea8c26dd5cb72e0d31e61aa1395d98ba",
  "url": "https://osv.dev/vulnerability/CVE-2026-27314",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache Cassandra: Privilege escalation via ADD IDENTITY authorization bypass",
    "summary": "Privilege escalation in Apache Cassandra 5.0 on an mTLS environment using MutualTlsAuthenticator allows a user with only CREATE permission to associate their own certificate identity with an arbitrary role, including a superuser role, and authenticate as that role via ADD IDENTITY. Users are recommended to upgrade to version 5.0.7+, which fixes this issue.",
    "evidence": "osv:CVE-2026-27314",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-27314",
      "aliases": [
        "CVE-2026-27314",
        "GHSA-qxpc-96fq-wwmg"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/cassandra",
              "type": "GIT",
              "events": [
                {
                  "introduced": "186272edca920c757b91bf95c2392bafa1a38d72"
                },
                {
                  "fixed": "0269fd5665751e8a6d8eab852e0f66c142b10ee6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:cassandra:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.0.0"
                      },
                      {
                        "fixed": "5.0.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27314.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:44.522715174Z",
      "provider": "osv",
      "references": [
        "https://repo.maven.apache.org/maven2/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27314.json",
        "https://lists.apache.org/thread/zrng82ddy4rpsmfyk582v6hqxcqrbz7f",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-27314"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-267"
        ],
        "cna_assigner": "apache",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "5.0"
                  },
                  {
                    "last_affected": "5.0.6"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27314.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-27314",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 512512,
  "published_at": "2026-04-07T16:33:44.448+00:00"
}