Security advisory

{
  "id": "683ff6f3df357f4df8731af0bebfca57922d6ef8ee3da6dac932b53c6bea92c4",
  "url": "https://osv.dev/vulnerability/CVE-2021-27911",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-27911",
    "summary": "Mautic versions before 3.3.4/4.0.0 are vulnerable to an inline JS XSS attack through the contact's first or last name and triggered when viewing a contact's details page then clicking on the action drop down and hovering over the Campaigns button. Contact first and last name can be populated from different sources such as UI, API, 3rd party syncing, forms, etc.",
    "evidence": "osv:CVE-2021-27911",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-27911",
      "aliases": [
        "CVE-2021-27911",
        "GHSA-72hm-fx78-xwhc"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mautic/mautic",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2f4cf5264a1281d029f002858b41b4efb80d8e83"
                },
                {
                  "introduced": "823a23c4c0148841f7f23c33c56167cfb59d0c99"
                },
                {
                  "last_affected": "5431e0384d181972b22b532e33d30c7089f2ae63"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:acquia:mautic:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.3.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:acquia:mautic:4.0.0:alpha1:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0-alpha1"
                      },
                      {
                        "last_affected": "4.0.0-alpha1"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:acquia:mautic:4.0.0:beta:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0-beta"
                      },
                      {
                        "last_affected": "4.0.0-beta"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:acquia:mautic:4.0.0:rc:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0-rc"
                      },
                      {
                        "last_affected": "4.0.0-rc"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.0.0-alpha1",
            "4.0.0-beta",
            "4.0.0-rc",
            "3.3.3",
            "3.3.3-rc",
            "3.3.2",
            "3.3.2-rc",
            "3.3.0-rc",
            "3.1.0",
            "3.1.0-rc",
            "3.0.1",
            "2.14.2-beta",
            "2.12.2-beta",
            "2.8.0",
            "2.7.1",
            "2.7.0",
            "2.6.1",
            "2.6.0",
            "2.5.1",
            "2.5.0",
            "2.4.0",
            "2.3.0",
            "2.2.1",
            "2.2.0",
            "2.1.1",
            "2.1.0",
            "2.0.1",
            "2.0.0",
            "1.4.1",
            "1.4.0",
            "1.3.1",
            "1.3.0",
            "1.2.4",
            "1.2.3",
            "1.2.2",
            "1.2.1",
            "1.2.0",
            "1.1.3",
            "1.1.2",
            "1.1.1",
            "1.1.0",
            "1.0.5",
            "1.0.4",
            "1.0.3",
            "1.0.2",
            "1.0.1",
            "1.0.0",
            "1.0.0-rc4",
            "1.0.0-rc3",
            "1.0.0-rc2",
            "1.0.0-rc1",
            "1.0.0-beta4",
            "1.0.0-beta3",
            "1.0.0-beta2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27911.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:41.165170502Z",
      "provider": "osv",
      "references": [
        "https://github.com/mautic/mautic/security/advisories/GHSA-72hm-fx78-xwhc"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-27911",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384498,
  "published_at": "2021-08-30T16:15:07.347+00:00"
}