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CVE-2020-25768

Status: ModifiedMedium (5.3)—

Contao before 4.4.52, 4.9.x before 4.9.6, and 4.10.x before 4.10.1 have Improper Input Validation. It is possible to inject insert tags in front end forms which will be replaced when the page is rendered.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Contao — Contao

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-25768",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-10-07T21:15:14.963",
  "references": [
    {
      "url": "https://community.contao.org/en/forumdisplay.php?4-Announcements",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://contao.org/en/security-advisories/insert-tag-injection-in-forms.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://community.contao.org/en/forumdisplay.php?4-Announcements",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://contao.org/en/security-advisories/insert-tag-injection-in-forms.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-74"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Contao before 4.4.52, 4.9.x before 4.9.6, and 4.10.x before 4.10.1 have Improper Input Validation. It is possible to inject insert tags in front end forms which will be replaced when the page is rendered."
    },
    {
      "lang": "es",
      "value": "Contao versiones anteriores a 4.4.52, versiones 4.9.x anteriores a 4.9.6 y versiones 4.10.x anteriores a 4.10,1 presentan una Comprobación de Entrada Inapropiada. Es posible inyectar etiquetas de inserción en formularios del front end que serán reemplazados cuando la página es renderizada"
    }
  ],
  "lastModified": "2026-06-17T03:07:16.357",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "23F9422B-6442-449E-AD0E-9C62C5FE2ED9",
              "versionEndExcluding": "4.4.52",
              "versionStartIncluding": "4.0"
            },
            {
              "criteria": "cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9A1287C9-07C4-441C-ADD3-69C756679EF9",
              "versionEndExcluding": "4.9.6",
              "versionStartIncluding": "4.9.0"
            },
            {
              "criteria": "cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "53A6E128-ED2F-42A1-AE01-39C3F83F5190",
              "versionEndExcluding": "4.10.1",
              "versionStartIncluding": "4.10.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}