FKIE_CVE-2021-24988

Vulnerability from fkie_nvd - Published: 2021-12-27 11:15 - Updated: 2026-06-17 03:41
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 WP RSS Aggregator WordPress plugin before 4.19.3 does not sanitise and escape data before outputting it in the System Info admin dashboard, which could lead to a Stored XSS issue due to the wprss_dismiss_addon_notice AJAX action missing authorisation and CSRF checks, allowing any authenticated users, such as subscriber to call it and set a malicious payload in the addon parameter.
References
contact@wpscan.comhttps://wpscan.com/vulnerability/0742483b-6314-451b-a63a-536fd1e14845Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://wpscan.com/vulnerability/0742483b-6314-451b-a63a-536fd1e14845Exploit, Third Party Advisory
Impacted products
Vendor Product Version
wprssaggregator wp_rss_aggregator *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "WP RSS Aggregator \u2013 News Feeds, Autoblogging, Youtube Video Feeds and More",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "4.19.3",
              "status": "affected",
              "version": "4.19.3",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "contact@wpscan.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:wprssaggregator:wp_rss_aggregator:*:*:*:*:*:wordpress:*:*",
              "matchCriteriaId": "D2DDA6EB-67F4-4D8F-BDBA-A30D7A719C8D",
              "versionEndExcluding": "4.19.3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The WP RSS Aggregator WordPress plugin before 4.19.3 does not sanitise and escape data before outputting it in the System Info admin dashboard, which could lead to a Stored XSS issue due to the wprss_dismiss_addon_notice AJAX action missing authorisation and CSRF checks, allowing any authenticated users, such as subscriber to call it and set a malicious payload in the addon parameter."
    },
    {
      "lang": "es",
      "value": "El plugin WP RSS Aggregator de WordPress versiones anteriores a 4.19.3, no sanea y escapa de los datos antes de mostrarlos en el panel de administraci\u00f3n de System Info, lo que podr\u00eda conllevar un problema de tipo XSS almacenado debido a que la acci\u00f3n AJAX wprss_dismiss_addon_notice carece de comprobaciones de autorizaci\u00f3n y CSRF, permitiendo a cualquier usuario autenticado, como un suscriptor, llamarla y establecer una carga \u00fatil maliciosa en el par\u00e1metro addon"
    }
  ],
  "id": "CVE-2021-24988",
  "lastModified": "2026-06-17T03:41:16.230",
  "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": "2021-12-27T11:15:09.357",
  "references": [
    {
      "source": "contact@wpscan.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://wpscan.com/vulnerability/0742483b-6314-451b-a63a-536fd1e14845"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://wpscan.com/vulnerability/0742483b-6314-451b-a63a-536fd1e14845"
    }
  ],
  "sourceIdentifier": "contact@wpscan.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "contact@wpscan.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-352"
        },
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Sightings

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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