Security advisory

{
  "id": "ce7715555b991fed1a7682cbee518b014b99dd5e5d6a832fff64d8bf835ad4b8",
  "url": "https://osv.dev/vulnerability/CVE-2020-17516",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-17516",
    "summary": "Apache Cassandra versions 2.1.0 to 2.1.22, 2.2.0 to 2.2.19, 3.0.0 to 3.0.23, and 3.11.0 to 3.11.9, when using 'dc' or 'rack' internode_encryption setting, allows both encrypted and unencrypted internode connections. A misconfigured node or a malicious user can use the unencrypted connection despite not being in the same rack or dc, and bypass mutual TLS requirement.",
    "evidence": "osv:CVE-2020-17516",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-17516",
      "aliases": [
        "BIT-cassandra-2020-17516",
        "CVE-2020-17516",
        "GHSA-2vxm-vp4c-fjfw"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/cassandra",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e06c1e8381525363e90ccf694275361e2958647a"
                },
                {
                  "last_affected": "94e9149c22f6a7772c0015e1b1ef2e2961155c0a"
                },
                {
                  "introduced": "437bb9de77f54aa5a4a6a634ab3d2c753a17b3fc"
                },
                {
                  "last_affected": "0d9462efc2cbf2a61a67ae4f6786086bb30272ef"
                },
                {
                  "introduced": "96f407bce56b98cd824d18e32ee012dbb99a0286"
                },
                {
                  "last_affected": "31530ff5ac6bd3bacd4b378573a2d191bdab8cd7"
                },
                {
                  "introduced": "88dee7e9d515ad94ecf8f2309f1e6138ec79e1a2"
                },
                {
                  "last_affected": "5ef75dd96cb693e4041e9ecb61a6852276f0eca4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:cassandra:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.1.0"
                      },
                      {
                        "last_affected": "2.1.22"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:cassandra:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.2.0"
                      },
                      {
                        "last_affected": "2.2.19"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:cassandra:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "last_affected": "3.0.23"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:cassandra:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.11.0"
                      },
                      {
                        "last_affected": "3.11.9"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-17516.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:03.702527599Z",
      "provider": "osv",
      "references": [
        "https://lists.apache.org/thread.html/r81243a412a37a22211754936a13856af07cc68a93d728c52807486e9%40%3Ccommits.cassandra.apache.org%3E",
        "https://lists.apache.org/thread.html/rcb16f36cafa184dd159e94033f87d0fc274c4752d467f3a09f2ceae4%40%3Ccommits.cassandra.apache.org%3E",
        "https://lists.apache.org/thread.html/rd84bec24907617bdb72f7ec907cd7437a0fd5a8886eb55aa84dd1eb8%40%3Ccommits.cassandra.apache.org%3E",
        "https://security.netapp.com/advisory/ntap-20210521-0002/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-17516",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440318,
  "published_at": "2021-02-03T17:15:13.123+00:00"
}