GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

FKIE_CVE-2021-26034

Vulnerability from fkie_nvd - Published: 2021-05-26 11:15 - Updated: 2026-06-17 03:42
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Summary
An issue was discovered in Joomla! 3.0.0 through 3.9.26. A missing token check causes a CSRF vulnerability in data download endpoints in com_banners and com_sysinfo.
References
security@joomla.orghttps://developer.joomla.org/security-centre/854-20210503-core-csrf-in-data-download-endpoints.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://developer.joomla.org/security-centre/854-20210503-core-csrf-in-data-download-endpoints.htmlVendor Advisory
Impacted products
Vendor Product Version
joomla joomla\! *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Joomla! CMS",
          "vendor": "Joomla! Project",
          "versions": [
            {
              "status": "affected",
              "version": "3.0.0-3.9.26"
            }
          ]
        }
      ],
      "source": "security@joomla.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:joomla:joomla\\!:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "61420841-4E11-4B1B-94A7-EFA3389B56CD",
              "versionEndIncluding": "3.9.26",
              "versionStartIncluding": "3.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Joomla! 3.0.0 through 3.9.26. A missing token check causes a CSRF vulnerability in data download endpoints in com_banners and com_sysinfo."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema en Joomla!\u0026#xa0;versiones 3.0.0 hasta 3.9.26.\u0026#xa0;Una falta de comprobaci\u00f3n de token causa una vulnerabilidad de tipo CSRF en los endpoints de descarga de datos en com_banners y com_sysinfo"
    }
  ],
  "id": "CVE-2021-26034",
  "lastModified": "2026-06-17T03:42:46.450",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "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": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-05-26T11:15:08.730",
  "references": [
    {
      "source": "security@joomla.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://developer.joomla.org/security-centre/854-20210503-core-csrf-in-data-download-endpoints.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://developer.joomla.org/security-centre/854-20210503-core-csrf-in-data-download-endpoints.html"
    }
  ],
  "sourceIdentifier": "security@joomla.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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

Author Source Type Date Other

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.