FKIE_CVE-2021-24503

Vulnerability from fkie_nvd - Published: 2021-08-02 11:15 - Updated: 2026-06-17 03:40
Severity
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Summary
The Popular Brand Icons – Simple Icons WordPress plugin before 2.7.8 does not sanitise or validate some of its shortcode parameters, such as "color", "size" or "class", allowing users with a role as low as Contributor to set Cross-Site payload in them. A post made by a contributor would still have to be approved by an admin to have the XSS triggered in the frontend, however, higher privilege users, such as editor could exploit this without the need of approval, and even when the blog disallows the unfiltered_html capability.
References
contact@wpscan.comhttps://wpscan.com/vulnerability/18ab1570-2b4a-48a4-86e6-c1d368563691Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://wpscan.com/vulnerability/18ab1570-2b4a-48a4-86e6-c1d368563691Exploit, Third Party Advisory
Impacted products
Vendor Product Version
thememason popular_brand_icons_-_simple_icons *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Popular Brand Icons \u2013 Simple Icons",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "2.7.8",
              "status": "affected",
              "version": "2.7.8",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "contact@wpscan.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:thememason:popular_brand_icons_-_simple_icons:*:*:*:*:*:wordpress:*:*",
              "matchCriteriaId": "12DA8CC7-0D7F-4418-A5FE-464F39778AAC",
              "versionEndExcluding": "2.7.8",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Popular Brand Icons \u2013 Simple Icons WordPress plugin before 2.7.8 does not sanitise or validate some of its shortcode parameters, such as \"color\", \"size\" or \"class\", allowing users with a role as low as Contributor to set Cross-Site payload in them. A post made by a contributor would still have to be approved by an admin to have the XSS triggered in the frontend, however, higher privilege users, such as editor could exploit this without the need of approval, and even when the blog disallows the unfiltered_html capability."
    },
    {
      "lang": "es",
      "value": "El plugin de WordPress Popular Brand Icons - Simple Icons versiones anteriores a 2.7.8, no sanea ni comprueba algunos de los par\u00e1metros de sus shortcodes, como \"color\", \"size\" o \"class\", permitiendo a usuarios con un rol tan bajo como el de Contribuyente establecer carga \u00fatil de tipo Cross-Site en ellos. Un post hecho por un colaborador todav\u00eda tendr\u00eda que ser aprobado por un administrador para que el ataque de tipo XSS se desencadenar\u00e1 en el frontend, sin embargo, los usuarios con muy privilegiados, como el editor podr\u00edan explotar esto sin necesidad de aprobaci\u00f3n, e incluso cuando el blog deshabilita la capacidad unfiltered_html"
    }
  ],
  "id": "CVE-2021-24503",
  "lastModified": "2026-06-17T03:40:08.727",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "NONE",
          "baseScore": 3.5,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 6.8,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-08-02T11:15:11.097",
  "references": [
    {
      "source": "contact@wpscan.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://wpscan.com/vulnerability/18ab1570-2b4a-48a4-86e6-c1d368563691"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://wpscan.com/vulnerability/18ab1570-2b4a-48a4-86e6-c1d368563691"
    }
  ],
  "sourceIdentifier": "contact@wpscan.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "contact@wpscan.com",
      "type": "Secondary"
    }
  ]
}



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