Security advisory

{
  "id": "3fa9c1aacaa3f7e79d646eb22e835df3ccb60f143d76ebfcdd8a0d9a70242752",
  "url": "https://osv.dev/vulnerability/CVE-2021-43810",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-43810",
    "summary": "Admidio is a free open source user management system for websites of organizations and groups. A cross-site scripting vulnerability is present in Admidio prior to version 4.0.12. The Reflected XSS vulnerability occurs because redirect.php does not properly validate the value of the url parameter. Through this vulnerability, an attacker is capable to execute malicious scripts. This issue is patched in version 4.0.12.",
    "evidence": "osv:CVE-2021-43810",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-43810",
      "aliases": [
        "CVE-2021-43810",
        "GHSA-3qgf-qgc3-42hh"
      ],
      "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/admidio/admidio",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "470f534768f47e3bb506ec3c66a9ddecc9a41cf5"
                },
                {
                  "fixed": "c043267d362f7813543cc2785119bf3e3e54fe21"
                },
                {
                  "fixed": "fcb0609abc1d2f65bc1377866bd678e5d891404b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:admidio:admidio:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.0.12"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "c043267d362f7813543cc2785119bf3e3e54fe21"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "fcb0609abc1d2f65bc1377866bd678e5d891404b"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "470f534768f47e3bb506ec3c66a9ddecc9a41cf5"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v4.0.12"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.1-Beta.2",
            "v4.0.11",
            "v4.0.10",
            "v4.0.9",
            "v4.0.8",
            "v4.0.7",
            "v4.0.6",
            "v4.0.5",
            "v4.0.4",
            "v4.0.3",
            "v4.0.2",
            "v4.0.1.1",
            "v4.0.1",
            "v4.0.0",
            "v4.0-Beta.5",
            "v4.0-Beta.4",
            "v4.0-Beta.3",
            "v4.0-Beta.2",
            "v4.0-Beta.1",
            "v3.2-Beta.1",
            "v3.1.5",
            "v3.0.6",
            "3.0-Beta.3",
            "3.0-Beta.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43810.json"
          }
        }
      ],
      "modified": "2026-10-20T10:55:04.104872004Z",
      "provider": "osv",
      "references": [
        "https://github.com/Admidio/admidio/security/advisories/GHSA-3qgf-qgc3-42hh",
        "https://github.com/Admidio/admidio/commit/c043267d362f7813543cc2785119bf3e3e54fe21",
        "https://github.com/Admidio/admidio/commit/fcb0609abc1d2f65bc1377866bd678e5d891404b",
        "https://github.com/Admidio/admidio/releases/tag/v4.0.12"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-43810",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386818,
  "published_at": "2021-12-07T22:15:06.997+00:00"
}