Gophish 0.12.1 Denial of Service via Office Document Upload

{
  "id": "c7a054c1d98f4d76d99e543d2efa817ab97bd6279a6482fc7774981717ea40f7",
  "url": "https://osv.dev/vulnerability/CVE-2026-39904",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Gophish 0.12.1 Denial of Service via Office Document Upload",
    "summary": "Gophish through 0.12.1 contains a denial of service vulnerability that allows authenticated users with the User role to exhaust server memory by uploading a crafted Office document as an email template attachment. The ApplyTemplate() function in models/attachment.go processes Office documents as ZIP archives and calls ioutil.ReadAll() on each contained file entry without enforcing size restrictions on uncompressed content, allowing a zip bomb payload to expand to several gigabytes in memory and cause the process to be terminated by the operating system.",
    "evidence": "osv:CVE-2026-39904",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-39904",
      "aliases": [
        "CVE-2026-39904",
        "GHSA-42jc-v69j-g38f",
        "GO-2026-6212"
      ],
      "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:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gophish/gophish",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "b1648f0759c6d57ac989157c55d8b47c40254fe6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.12.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.12.1",
            "v0.12.0",
            "v0.11.0",
            "v0.10.1",
            "v0.10.0",
            "v0.9.0",
            "v0.8.0",
            "0.7.1",
            "v0.7.0",
            "v0.6.0",
            "v0.5.0",
            "v0.4.0",
            "v0.3.0",
            "v0.2.0",
            "v0.1.2",
            "v0.1.1",
            "v0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39904.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.247006193Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39904.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-39904",
        "https://www.vulncheck.com/advisories/gophish-denial-of-service-via-office-document-upload",
        "https://github.com/gophish/gophish",
        "https://github.com/ashikmd7/GoPhish-0.12.1/blob/main/Unbounded%20Memory%20Allocation%20in%20Office%20Attachment%20Processing%20Leads%20to%20Server%20DoS/README.md"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-770"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39904.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-39904",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493845,
  "published_at": "2026-06-22T20:11:14.67+00:00"
}