FKIE_CVE-2021-47929

Vulnerability from fkie_nvd - Published: 2026-05-10 13:16 - Updated: 2026-07-25 10:10
Severity
6.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Summary
Filterable Portfolio Gallery 1.0 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious JavaScript by entering payloads in the title field. Attackers can store JavaScript code like image tags with onerror handlers that execute when the gallery is previewed, affecting all users viewing the page.
References
disclosure@vulncheck.comhttp://www.filterable-portfolio.com/
disclosure@vulncheck.comhttps://wordpress.org/plugins/fg-gallery/
disclosure@vulncheck.comhttps://www.exploit-db.com/exploits/50458
disclosure@vulncheck.comhttps://www.vulncheck.com/advisories/wordpress-plugin-filterable-portfolio-gallery-stored-xss
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Filterable Portfolio Gallery",
          "vendor": "Filterable-Portfolio",
          "versions": [
            {
              "status": "affected",
              "version": "1.0"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Filterable Portfolio Gallery 1.0 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious JavaScript by entering payloads in the title field. Attackers can store JavaScript code like image tags with onerror handlers that execute when the gallery is previewed, affecting all users viewing the page."
    },
    {
      "lang": "es",
      "value": "Filterable Portfolio Gallery 1.0 contiene una vulnerabilidad de cross-site scripting almacenado que permite a atacantes autenticados inyectar JavaScript malicioso al introducir payloads en el campo de t\u00edtulo. Los atacantes pueden almacenar c\u00f3digo JavaScript como etiquetas de imagen con manejadores onerror que se ejecutan cuando se previsualiza la galer\u00eda, afectando a todos los usuarios que ven la p\u00e1gina."
    }
  ],
  "id": "CVE-2021-47929",
  "lastModified": "2026-07-25T10:10:00.167",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 2.7,
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.1,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47929",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-11T15:14:54.278307Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-10T13:16:29.017",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "http://www.filterable-portfolio.com/"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://wordpress.org/plugins/fg-gallery/"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.exploit-db.com/exploits/50458"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/wordpress-plugin-filterable-portfolio-gallery-stored-xss"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.