{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-67447",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-21T16:18:52.447416Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-21T16:19:21.564Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/axllent/mailpit/security/advisories/GHSA-r553-m4fv-5v97"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "mailpit",
          "vendor": "axllent",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.30.0, \u003c 1.30.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Mailpit is an email testing tool and API for developers. From 1.30.0 until 1.30.5, Mailpit\u0027s internal/smtpd/smtpd.go readData() function calls bufio.Reader.ReadBytes before applying the len(data)+len(line) size check to the completed SMTP DATA line against Server.MaxSize. An unauthenticated SMTP client can send a single line larger than the configured MaxMessageSize, causing the full line to be allocated before Mailpit returns the 552 5.3.4 rejection. This post-fix gap remains after normal multi-line DATA accumulation was bounded, and concurrent oversized lines can create substantial memory pressure beyond the configured message-size cap. This issue is fixed in version 1.30.5."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-20T21:15:06.567Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/axllent/mailpit/security/advisories/GHSA-r553-m4fv-5v97",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/axllent/mailpit/security/advisories/GHSA-r553-m4fv-5v97"
        },
        {
          "name": "https://github.com/axllent/mailpit/commit/8720c6bd8281fc00d458081908f1dbef8e59a98c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/axllent/mailpit/commit/8720c6bd8281fc00d458081908f1dbef8e59a98c"
        },
        {
          "name": "https://github.com/axllent/mailpit/releases/tag/v1.30.5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/axllent/mailpit/releases/tag/v1.30.5"
        }
      ],
      "source": {
        "advisory": "GHSA-r553-m4fv-5v97",
        "discovery": "UNKNOWN"
      },
      "title": "Mailpit: SMTP DATA line reader buffers over-limit input before size enforcement"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-67447",
    "datePublished": "2026-08-20T21:15:06.567Z",
    "dateReserved": "2026-07-29T15:07:24.992Z",
    "dateUpdated": "2026-08-21T16:19:21.564Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}