Security advisory

{
  "id": "afe9e17ac2080da3b9daaab5c53f5bd08aebf6d4971abc34aeeadbf3c007a169",
  "url": "https://osv.dev/vulnerability/CVE-2021-3539",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-3539",
    "summary": "EspoCRM 6.1.6 and prior suffers from a persistent (type II) cross-site scripting (XSS) vulnerability in processing user-supplied avatar images. This issue was fixed in version 6.1.7 of the product.",
    "evidence": "osv:CVE-2021-3539",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-3539",
      "aliases": [
        "BIT-espocrm-2021-3539",
        "CVE-2021-3539"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/espocrm/espocrm",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "6e9f368a0a01b69b28c6d7cb3cdfd94f31d349c2"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:espocrm:espocrm:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "6.1.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "6.1.6",
            "6.1.5",
            "6.1.4",
            "6.1.3",
            "6.1.2",
            "6.1.1",
            "6.1.0",
            "6.0.1",
            "6.0.0",
            "6.0.0-beta4",
            "6.0.0-beta2",
            "6.0.0-beta1",
            "5.9.2",
            "5.9.1",
            "5.9.0",
            "5.8.2",
            "5.8.1",
            "5.8.0",
            "5.7.5",
            "5.7.4",
            "5.7.3",
            "5.7.2",
            "5.7.1",
            "5.7.0",
            "5.6.1",
            "5.6.0",
            "5.5.1",
            "5.5.0",
            "5.4.3",
            "5.4.2",
            "5.4.1",
            "5.4.0",
            "5.3.2",
            "5.3.1",
            "5.3.0",
            "5.2.5",
            "5.2.4",
            "5.2.3",
            "5.2.2",
            "5.2.1",
            "5.2.0",
            "5.1.2",
            "5.1.1",
            "5.1.0",
            "5.0.1",
            "5.0.0",
            "4.8.0",
            "4.7.0",
            "4.6.0",
            "4.5.0",
            "4.4.0",
            "4.3.0",
            "4.3.0-beta.2",
            "4.3.0-beta.1",
            "4.2.4",
            "4.2.3",
            "4.2.2",
            "4.2.1",
            "4.2.0",
            "4.1.4",
            "4.1.3",
            "4.1.2",
            "4.1.1",
            "4.1.0",
            "4.0.3",
            "4.0.2",
            "4.0.1",
            "4.0.0",
            "4.0.0-beta.4",
            "4.0.0-beta.3",
            "4.0.0-beta.2",
            "4.0.0-beta.1",
            "3.9.1",
            "3.9.0",
            "3.8.0",
            "3.7.1",
            "3.7.0",
            "3.6.1",
            "3.6.0",
            "3.5.0",
            "3.4.2",
            "3.4.1",
            "3.4.0",
            "3.3.0",
            "3.2.0",
            "3.1.0",
            "3.0.0",
            "2.9.0",
            "2.8.1",
            "2.8.0",
            "2.6.0",
            "2.5.2",
            "2.5.1",
            "2.5.0",
            "2.4.0",
            "2.3.0",
            "2.0.1",
            "1.2.0",
            "1.1.2",
            "1.1.1",
            "1.1.0",
            "1.0.1",
            "1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3539.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:42.143658680Z",
      "provider": "osv",
      "references": [
        "https://www.rapid7.com/blog/post/2021/07/27/multiple-open-source-web-app-vulnerabilities-fixed/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-3539",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 435306,
  "published_at": "2021-08-04T23:15:08.383+00:00"
}