RabbitMQ management HTTP API accepts request bodies larger than configured max_http_body_size

{
  "id": "cde115c191c54218f869f243b4afb9ddea8c0b355513dad717d17997dbdd7209",
  "url": "https://osv.dev/vulnerability/CVE-2026-57212",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "RabbitMQ management HTTP API accepts request bodies larger than configured max_http_body_size",
    "summary": "RabbitMQ is a messaging and streaming broker. Prior to 3.13.14, 4.0.19, 4.1.10, and 4.2.5, the rabbitmq_management HTTP API accepts oversized valid JSON bodies on with_decode and direct_request paths because read_complete_body checks the accumulated size before the final chunk but not the final combined size. This issue is fixed in versions 3.13.14, 4.0.19, 4.1.10, and 4.2.5.",
    "evidence": "osv:CVE-2026-57212",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-57212",
      "aliases": [
        "CVE-2026-57212",
        "GHSA-5cmq-vp28-xqrj"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/rabbitmq/rabbitmq-server",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c73bcd30fcadd77f3ec354c686f969fc971ac940"
                },
                {
                  "fixed": "30e04878783cf6321185357bbea6cc589f9d4cd7"
                },
                {
                  "fixed": "3976d148901bdfa82e1cd60b7a4534e073266ba5"
                },
                {
                  "fixed": "b8fc2ef7c50a2797d15e1ea7cf34f290032303bb"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.13.0"
                      },
                      {
                        "fixed": "4.2.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "3976d148901bdfa82e1cd60b7a4534e073266ba5"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b8fc2ef7c50a2797d15e1ea7cf34f290032303bb"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "30e04878783cf6321185357bbea6cc589f9d4cd7"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v4.2.5"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.2.4",
            "v4.2.3",
            "v4.2.2",
            "v4.2.1",
            "v4.2.0",
            "v4.2.0-rc.1",
            "v4.2.0-beta.4",
            "v4.2.0-beta.3",
            "v4.2.0-beta.2",
            "v4.2.0-beta.1",
            "v4.1.0-beta.4",
            "v4.1.0-beta.3",
            "v4.1.0-beta.2",
            "v4.1.0-beta.1",
            "v4.1.0-alpha",
            "v3.13.0-rc.6",
            "v3.13.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57212.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.869710512Z",
      "provider": "osv",
      "references": [
        "https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57212.json",
        "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-5cmq-vp28-xqrj",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-57212",
        "https://github.com/rabbitmq/rabbitmq-server/commit/3976d148901bdfa82e1cd60b7a4534e073266ba5",
        "https://github.com/rabbitmq/rabbitmq-server/commit/b8fc2ef7c50a2797d15e1ea7cf34f290032303bb",
        "https://github.com/rabbitmq/rabbitmq-server/pull/15712",
        "https://github.com/rabbitmq/rabbitmq-server/pull/15714"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-770"
        ],
        "cna_assigner": "GitHub_M",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "4.1.0"
                  },
                  {
                    "fixed": "4.1.10"
                  },
                  {
                    "introduced": "4.0.0"
                  },
                  {
                    "fixed": "4.0.19"
                  },
                  {
                    "introduced": "3.13.0"
                  },
                  {
                    "fixed": "3.13.14"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57212.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-57212",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521840,
  "published_at": "2026-07-10T20:15:28.422+00:00"
}