{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.0.0"
              },
              {
                "fixed": "4.0.5"
              },
              {
                "introduced": "3.3.0"
              },
              {
                "fixed": "3.3.15"
              },
              {
                "introduced": "2.9.0"
              },
              {
                "fixed": "2.9.13"
              },
              {
                "introduced": "2.8.0"
              },
              {
                "fixed": "2.8.11"
              }
            ],
            "source": "DESCRIPTION"
          },
          "events": [
            {
              "introduced": "f1b207daac91ddc880c0883ec759809464c78700"
            },
            {
              "fixed": "4fef8fb7a43d18042468233e8aea1ab34f5c842f"
            },
            {
              "introduced": "a9001bf4c2cae68ad5d58c65d4d588922fec00f6"
            },
            {
              "fixed": "5572a82b1a6c931d9a1656cadf8ba3df59102492"
            },
            {
              "introduced": "325a27907bc171a2f7da3a444bf538950e1cfde0"
            },
            {
              "fixed": "7d7b5efea4788d67fdd9c0d22afd1a10df00c3a1"
            },
            {
              "introduced": "fb5b3ea1976cbd7846d5df555fa5e687b68364d9"
            },
            {
              "fixed": "d3b3f85a3cf6571e4b2f4b64641e281050459ca7"
            }
          ],
          "repo": "https://github.com/spring-projects/spring-kafka",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "vmware",
    "cwe_ids": [
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41726.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "4.0.0"
          },
          {
            "fixed": "4.0.5.1"
          },
          {
            "introduced": "3.3.0"
          },
          {
            "fixed": "3.3.15.1"
          },
          {
            "introduced": "3.2.0"
          },
          {
            "fixed": "3.2.14"
          },
          {
            "introduced": "2.9.0"
          },
          {
            "fixed": "2.9.14"
          },
          {
            "introduced": "2.8.0"
          },
          {
            "fixed": "2.8.12"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "introduced": "4.0.0"
          },
          {
            "fixed": "4.0.5"
          },
          {
            "introduced": "3.3.0"
          },
          {
            "fixed": "3.3.15"
          },
          {
            "introduced": "3.2.0"
          },
          {
            "fixed": "3.2.13"
          },
          {
            "introduced": "2.9.0"
          },
          {
            "fixed": "2.9.13"
          },
          {
            "introduced": "2.8.0"
          },
          {
            "fixed": "2.8.11"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "When an application opts into DelegatingDeserializer, a producer can grow the consumer's heap without bound by sending records with unique random spring.kafka.serialization.selector header values, eventually causing GC thrash and OutOfMemoryError.\n\nAffected versions:\nSpring for Apache Kafka 4.0.0 through 4.0.5; 3.3.0 through 3.3.15; 3.2.0 through 3.2.13; 2.9.0 through 2.9.13; 2.8.0 through 2.8.11.",
  "id": "CVE-2026-41726",
  "modified": "2026-09-01T11:30:32.776447501Z",
  "published": "2026-06-09T23:48:51.048Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://spring.io/security/cve-2026-41726"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41726.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41726"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "In Spring for Apache Kafka, unbounded delegate cache keyed on user-controlled, potentially malicious selector header"
}