{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:joomla:joomla\\!:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "5.4.4"
              },
              {
                "introduced": "6.0.0"
              },
              {
                "fixed": "6.0.4"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "c1acb7e6973bd549fe35a02659fe851ff1a37dfe"
            },
            {
              "fixed": "47b48aeceae211ae8016cf1da2b821a0d0467f55"
            },
            {
              "introduced": "0db7d502466ae41242ad761424f76378458fb819"
            },
            {
              "fixed": "e7d45e19c77cc0fa3b9a70af48b05bb937a7f011"
            }
          ],
          "repo": "https://github.com/joomla/joomla-cms",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {},
  "details": "Lack of output escaping leads to a XSS vector in the multilingual associations component.",
  "id": "CVE-2026-21631",
  "modified": "2026-07-08T05:37:53.310782170Z",
  "published": "2026-04-01T10:16:16.097Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://developer.joomla.org/security-centre/1029-20260303-core-xss-vector-in-com-associations-comparison-view.html"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/Shirshaw64p/security-advisories/tree/main/CVE-2026-21631"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}