CVE-2026-66490

{
  "id": "CVE-2026-66490",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-29T14:16:34.373",
  "lastModified": "2026-10-23T23:10:00.157",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Joomla Extension - balbooa.com - Stored cross-site scripting via a comment avatar in Gridbox < 2.20.2"
    },
    {
      "lang": "es",
      "value": "Extensión de Joomla - balbooa.com - cross-site scripting almacenado a través de un avatar de comentario en Gridbox anterior a 2.20.2"
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "balbooa.com",
          "product": "Gridbox extension for Joomla",
          "defaultStatus": "unaffected",
          "packageName": "com_gridbox",
          "versions": [
            {
              "version": "1.0.0-2.20.1",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-29T14:42:53.533293Z",
          "id": "CVE-2026-66490",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:balbooa:gridbox:*:*:*:*:*:joomla\\!:*:*",
              "versionEndExcluding": "2.20.2",
              "matchCriteriaId": "94D01B09-FAE8-4E62-839F-16A6F07B736C"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://mysites.guru/blog/gridbox-23-critical-vulnerabilities/",
      "source": "[email protected]",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.balbooa.com/gridbox",
      "source": "[email protected]",
      "tags": [
        "Product"
      ]
    }
  ]
}