Security advisory

{
  "id": "b2cbcf2bfa781c11e043e85b010bf49b926e5ca6bb4b2f2b5f18e5e21b3eb975",
  "url": "https://osv.dev/vulnerability/CVE-2020-22840",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-22840",
    "summary": "Open redirect vulnerability in b2evolution CMS version prior to 6.11.6 allows an attacker to perform malicious open redirects to an attacker controlled resource via redirect_to parameter in email_passthrough.php.",
    "evidence": "osv:CVE-2020-22840",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-22840",
      "aliases": [
        "CVE-2020-22840"
      ],
      "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/b2evolution/b2evolution",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "c4c3c02c00b937f312676003d820ad72f4813631"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:b2evolution:b2evolution:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "6.11.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "6.11.5",
            "6.11.4",
            "6.10.8",
            "6.10.7",
            "6.10.6",
            "6.10.5",
            "6.10.4",
            "6.10.3",
            "6.10.2",
            "6.9.7",
            "6-9-5",
            "6-9-4",
            "6.9.5",
            "6.9.4",
            "6.9.3",
            "6.8.10",
            "6.8.9",
            "6.8.8",
            "6.8.7",
            "6.8.6",
            "6.8.5",
            "6.8.4",
            "6.8.3",
            "6.7.7",
            "6.7.6",
            "6.7.5",
            "6.6.8",
            "6.6.7",
            "6.6.6",
            "6.6.5",
            "6.6.4",
            "6.6.1",
            "6.6.0",
            "6.5.0",
            "6.4.4-beta",
            "6.4.3-beta",
            "6.4.2-beta",
            "6.1.2-alpha",
            "6.0.0-alpha.1",
            "6.0.0-alpha",
            "v5.2.0-stable"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-22840.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:48.164444303Z",
      "provider": "osv",
      "references": [
        "https://github.com/b2evolution/b2evolution/issues/102",
        "https://www.exploit-db.com/exploits/49554"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-22840",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383840,
  "published_at": "2021-02-09T14:15:14.903+00:00"
}