In Spring for Apache Kafka, SSRF via DNS resolution triggered by untrusted java.net types in header mapper default trusted packages

{
  "id": "5cec49ce7b6dc8a70c9bfeb157cdf371e0cb692a2249d1077050cf0744e55c61",
  "url": "https://osv.dev/vulnerability/CVE-2026-59278",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "In Spring for Apache Kafka, SSRF via DNS resolution triggered by untrusted java.net types in header mapper default trusted packages",
    "summary": "JsonKafkaHeaderMapper and DefaultKafkaHeaderMapper include java.net in their default trusted packages list. When these mappers are used — which is the default configuration for all @KafkaListener consumers — an external Kafka producer can inject a java.net.InetAddress type via the spring_json_header_types message header. Spring for Apache Kafka 4.1.0 Spring for Apache Kafka 4.0.0 - 4.0.6 Spring for Apache Kafka 3.0.0 - 3.3.16 Spring for Apache Kafka 2.9.0 - 2.9.14 Spring for Apache Kafka 2.8.12 and earlier",
    "evidence": "osv:CVE-2026-59278",
    "products": [],
    "severity": "medium",
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      "aliases": [
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              "repo": "https://github.com/spring-projects/spring-kafka",
              "type": "GIT",
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                        "fixed": "4.1.0.1"
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                    "source": "CPE_RANGE"
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59278.json"
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      "modified": "2026-10-28T02:30:36.798922834Z",
      "provider": "osv",
      "references": [
        "https://spring.io/security/cve-2026-59278",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59278.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-59278"
      ],
      "provider_metadata": {
        "cna_assigner": "vmware",
        "unresolved_ranges": [
          {
            "extracted_events": [
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                "strategy": "StandaloneSingleVersion"
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            "extracted_events": [
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                "range": [
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                    "introduced": "4.0.0"
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                    "last_affected": "4.0.6"
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        "value": "CVE-2026-59278",
        "evidence": "/id"
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    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 504329,
  "published_at": "2026-08-27T05:20:36.841+00:00"
}