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CVE-2011-4903

Status: ModifiedMedium (6.1)—

Cross-site Scripting (XSS) in TYPO3 before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 allows remote attackers to inject arbitrary web script or HTML via the RemoveXSS function.

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)

Typo3 — Typo3

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2011-4903",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.1,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "TYPO3",
          "product": "TYPO3",
          "versions": [
            {
              "status": "affected",
              "version": "before 4.5.4"
            }
          ]
        }
      ]
    }
  ],
  "published": "2019-11-06T17:15:11.330",
  "references": [
    {
      "url": "https://security-tracker.debian.org/tracker/CVE-2011-4903",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://typo3.org/security/advisory/typo3-core-sa-2011-001/#XSS",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://security-tracker.debian.org/tracker/CVE-2011-4903",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://typo3.org/security/advisory/typo3-core-sa-2011-001/#XSS",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Cross-site Scripting (XSS) in TYPO3 before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 allows remote attackers to inject arbitrary web script or HTML via the RemoveXSS function."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de tipo Cross-site Scripting (XSS) en TYPO3 versiones anteriores a la versión 4.3.12, versiones 4.4.x anteriores a la versión  4.4.9 y versiones 4.5.x anteriores a 4.5.4, permite a atacantes remotos inyectar script web o HTML arbitrario por medio de la función RemoveXSS."
    }
  ],
  "lastModified": "2026-06-16T23:35:36.067",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5A8C2013-3653-40E0-B692-8524309338F0",
              "versionEndExcluding": "4.3.12",
              "versionStartIncluding": "4.3.0"
            },
            {
              "criteria": "cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BA153A2C-2697-47BC-B836-17AA48875F7A",
              "versionEndExcluding": "4.4.9",
              "versionStartIncluding": "4.4.0"
            },
            {
              "criteria": "cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "898F86CE-0897-4403-A0AC-90C5DCED8AF4",
              "versionEndExcluding": "4.5.4",
              "versionStartIncluding": "4.5.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}