Security advisory

{
  "id": "5227f63949c88e136748287e67513cb30a59199df7a527f572751db94f787b28",
  "url": "https://osv.dev/vulnerability/CVE-2020-12827",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-12827",
    "summary": "MJML prior to 4.6.3 contains a path traversal vulnerability when processing the mj-include directive within an MJML document.",
    "evidence": "osv:CVE-2020-12827",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-12827",
      "aliases": [
        "CVE-2020-12827",
        "GHSA-4hch-r9xf-6vfr"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mjmlio/mjml",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "967cd5d2988836d93d051678cecd5ac58e77c669"
                },
                {
                  "fixed": "30e29ed2cdaec8684d60a6d12ea07b611c765a12"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mjml:mjml:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.6.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "30e29ed2cdaec8684d60a6d12ea07b611c765a12"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "967cd5d2988836d93d051678cecd5ac58e77c669"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v4.6.3"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.6.2",
            "v4.6.1",
            "v4.6.0",
            "v4.5.1",
            "v4.5.0",
            "v4.4.1",
            "v4.4.0",
            "v4.0.4",
            "v4.0.2",
            "v4.0.0-alpha.5",
            "4.0.0-alpha.5",
            "v4.0.0-alpha.4",
            "4.0.0-alpha.3",
            "3.2.0",
            "3.2.0-beta.3",
            "3.1.1",
            "3.1.0",
            "3.0.2",
            "3.0.1",
            "3.0.0",
            "2.3.3",
            "2.3.2",
            "2.3.1",
            "2.2.0",
            "2.1.1",
            "2.1.0",
            "2.0.2",
            "2.0.1",
            "2.0.0",
            "1.3.4",
            "1.3.3",
            "1.3.2",
            "1.3.1",
            "1.3.0",
            "1.2.1",
            "1.2.0",
            "1.1.0",
            "v1.0.4",
            "v1.0.3",
            "v1.0.2",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-12827.json"
          }
        }
      ],
      "modified": "2026-10-20T10:51:47.138677901Z",
      "provider": "osv",
      "references": [
        "https://rcesecurity.com",
        "https://github.com/mjmlio/mjml/releases/tag/v4.6.3",
        "https://mjml.io/community",
        "https://twitter.com/mjmlio",
        "https://github.com/mjmlio/mjml/commit/30e29ed2cdaec8684d60a6d12ea07b611c765a12"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-12827",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382939,
  "published_at": "2020-06-17T14:15:10.523+00:00"
}