{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-15911",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-06T02:00:19.695616Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-06T02:01:13.972Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:confluent:confluent-kafka:*:*:*:*:*:*:*:*",
            "cpe:2.3:a:confluent:confluent-kafka:2.14.2:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "product": "confluent-kafka",
          "vendor": "confluent",
          "versions": [
            {
              "lessThanOrEqual": "2.14.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:confluent:confluent-kafka:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "2.14.2",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Rahul Karne"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Confluent Kafka Python client\u0027s HashiCorp Vault KMS integration could allow a remote attacker to obtain sensitive information due to improper TLS certificate validation."
            }
          ],
          "value": "Confluent Kafka Python client\u0027s HashiCorp Vault KMS integration could allow a remote attacker to obtain sensitive information due to improper TLS certificate validation."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295 Improper certificate validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-01T18:29:42.297Z",
        "orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
        "shortName": "ibm"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "patch"
          ],
          "url": "https://support.confluent.io/hc/en-us/articles/54133146724244-CONFSA-2026-22-CVE-2026-15911-Confluent-Kafka-Python-Client-Vulnerability-TLS-Certificate-verification-disabled-by-default-in-HashiCorp-Vault-KMS-Integration"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cul\u003e\u003cli\u003e\u003cstrong\u003econfluent-kafka (Python): \u003c/strong\u003eThis issue has been addressed in confluent-kafka (Python) 2.15.0, which:\u003cul\u003e\u003cli\u003eEnables TLS certificate verification by default.\u003c/li\u003e\u003cli\u003eExposes configuration to supply a custom CA bundle and an optional client certificate for mutual TLS, through both driver configuration and standard Vault environment variables:\u003cul\u003e\u003cli\u003essl.ca.location (or environment variable VAULT_CACERT): CA bundle used to verify the Vault server certificate.\u003c/li\u003e\u003cli\u003essl.certificate.location (or environment variable VAULT_CLIENT_CERT): client certificate for mutual TLS.\u003c/li\u003e\u003cli\u003essl.key.location (or environment variable VAULT_CLIENT_KEY): client private key for mutual TLS.\u003c/li\u003e\u003c/ul\u003e\u003c/li\u003e\u003cli\u003eAn empty or unset CA value keeps verification enabled; it does not silently disable verification.\u003c/li\u003e\u003c/ul\u003e\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eConfluent Platform: \u003c/strong\u003eNot affected. The vulnerability resides in the confluent-kafka Python client library and does not affect Confluent Platform server components or their released versions.\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eConfluent Cloud:\u003c/strong\u003e Not affected. No remediation is required for Confluent Cloud.\u003c/li\u003e\u003c/ul\u003e"
            }
          ],
          "value": "*  confluent-kafka (Python): This issue has been addressed in confluent-kafka (Python) 2.15.0, which:  *  Enables TLS certificate verification by default.\n  *  Exposes configuration to supply a custom CA bundle and an optional client certificate for mutual TLS, through both driver configuration and standard Vault environment variables:  *  ssl.ca.location (or environment variable VAULT_CACERT): CA bundle used to verify the Vault server certificate.\n  *  ssl.certificate.location (or environment variable VAULT_CLIENT_CERT): client certificate for mutual TLS.\n  *  ssl.key.location (or environment variable VAULT_CLIENT_KEY): client private key for mutual TLS.\n\n\n\n  *  An empty or unset CA value keeps verification enabled; it does not silently disable verification.\n\n\n\n  *  Confluent Platform: Not affected. The vulnerability resides in the confluent-kafka Python client library and does not affect Confluent Platform server components or their released versions.\n  *  Confluent Cloud: Not affected. No remediation is required for Confluent Cloud."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Confluent Kafka Python Improper TLS Certificate Validation",
      "x_generator": {
        "engine": "Vulnogram 1.0.5"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
    "assignerShortName": "ibm",
    "cveId": "CVE-2026-15911",
    "datePublished": "2026-10-01T18:29:42.297Z",
    "dateReserved": "2026-07-15T19:28:12.162Z",
    "dateUpdated": "2026-10-06T02:01:13.972Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-15911\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-06T02:00:19.695616Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-06T02:01:08.619Z\"}}], \"cna\": {\"title\": \"Confluent Kafka Python Improper TLS Certificate Validation\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Rahul Karne\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.4, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:confluent:confluent-kafka:*:*:*:*:*:*:*:*\", \"cpe:2.3:a:confluent:confluent-kafka:2.14.2:*:*:*:*:*:*:*\"], \"vendor\": \"confluent\", \"product\": \"confluent-kafka\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"2.14.2\"}], \"defaultStatus\": \"unaffected\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"*  confluent-kafka (Python): This issue has been addressed in confluent-kafka (Python) 2.15.0, which:  *  Enables TLS certificate verification by default.\\n  *  Exposes configuration to supply a custom CA bundle and an optional client certificate for mutual TLS, through both driver configuration and standard Vault environment variables:  *  ssl.ca.location (or environment variable VAULT_CACERT): CA bundle used to verify the Vault server certificate.\\n  *  ssl.certificate.location (or environment variable VAULT_CLIENT_CERT): client certificate for mutual TLS.\\n  *  ssl.key.location (or environment variable VAULT_CLIENT_KEY): client private key for mutual TLS.\\n\\n\\n\\n  *  An empty or unset CA value keeps verification enabled; it does not silently disable verification.\\n\\n\\n\\n  *  Confluent Platform: Not affected. The vulnerability resides in the confluent-kafka Python client library and does not affect Confluent Platform server components or their released versions.\\n  *  Confluent Cloud: Not affected. No remediation is required for Confluent Cloud.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cul\u003e\u003cli\u003e\u003cstrong\u003econfluent-kafka (Python): \u003c/strong\u003eThis issue has been addressed in confluent-kafka (Python) 2.15.0, which:\u003cul\u003e\u003cli\u003eEnables TLS certificate verification by default.\u003c/li\u003e\u003cli\u003eExposes configuration to supply a custom CA bundle and an optional client certificate for mutual TLS, through both driver configuration and standard Vault environment variables:\u003cul\u003e\u003cli\u003essl.ca.location (or environment variable VAULT_CACERT): CA bundle used to verify the Vault server certificate.\u003c/li\u003e\u003cli\u003essl.certificate.location (or environment variable VAULT_CLIENT_CERT): client certificate for mutual TLS.\u003c/li\u003e\u003cli\u003essl.key.location (or environment variable VAULT_CLIENT_KEY): client private key for mutual TLS.\u003c/li\u003e\u003c/ul\u003e\u003c/li\u003e\u003cli\u003eAn empty or unset CA value keeps verification enabled; it does not silently disable verification.\u003c/li\u003e\u003c/ul\u003e\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eConfluent Platform: \u003c/strong\u003eNot affected. The vulnerability resides in the confluent-kafka Python client library and does not affect Confluent Platform server components or their released versions.\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eConfluent Cloud:\u003c/strong\u003e Not affected. No remediation is required for Confluent Cloud.\u003c/li\u003e\u003c/ul\u003e\", \"base64\": false}]}], \"references\": [{\"url\": \"https://support.confluent.io/hc/en-us/articles/54133146724244-CONFSA-2026-22-CVE-2026-15911-Confluent-Kafka-Python-Client-Vulnerability-TLS-Certificate-verification-disabled-by-default-in-HashiCorp-Vault-KMS-Integration\", \"tags\": [\"vendor-advisory\", \"patch\"]}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.5\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Confluent Kafka Python client\u0027s HashiCorp Vault KMS integration could allow a remote attacker to obtain sensitive information due to improper TLS certificate validation.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Confluent Kafka Python client\u0027s HashiCorp Vault KMS integration could allow a remote attacker to obtain sensitive information due to improper TLS certificate validation.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-295\", \"description\": \"CWE-295 Improper certificate validation\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:confluent:confluent-kafka:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndIncluding\": \"2.14.2\", \"versionStartIncluding\": \"0\"}], \"operator\": \"OR\"}], \"operator\": \"OR\"}], \"providerMetadata\": {\"orgId\": \"9a959283-ebb5-44b6-b705-dcc2bbced522\", \"shortName\": \"ibm\", \"dateUpdated\": \"2026-10-01T18:29:42.297Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-15911\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-06T02:01:13.972Z\", \"dateReserved\": \"2026-07-15T19:28:12.162Z\", \"assignerOrgId\": \"9a959283-ebb5-44b6-b705-dcc2bbced522\", \"datePublished\": \"2026-10-01T18:29:42.297Z\", \"assignerShortName\": \"ibm\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}