{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:haraka_project:haraka:*:*:*:*:*:node.js:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.1.4"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a9c0fd522caa27f0ec704da29ab328b41f4dac0f"
            }
          ],
          "repo": "https://github.com/haraka/haraka",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-xph3-r2jf-4vp3"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-248"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34752.json"
  },
  "details": "Haraka is a Node.js mail server. Prior to version 3.1.4, sending an email with __proto__: as a header name crashes the Haraka worker process. This issue has been patched in version 3.1.4.",
  "id": "CVE-2026-34752",
  "modified": "2026-08-12T03:51:47.878515852Z",
  "published": "2026-04-02T18:42:38.367Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/haraka/Haraka/releases/tag/v3.1.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34752.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/haraka/Haraka/security/advisories/GHSA-xph3-r2jf-4vp3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34752"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Haraka affected by DoS via `__proto__` email header"
}