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CVE-2021-44856

Estado: ModificadaMedia (5.3)—

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. A title blocked by AbuseFilter can be created via Special:ChangeContentModel due to the mishandling of the EditFilterMergedContent hook return value.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Mediawiki — Mediawiki

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-44856",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-44856",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-04-14T15:49:08.587806Z"
        }
      }
    ],
    "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
      },
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "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": "unknown",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-12-26T06:15:10.737",
  "references": [
    {
      "url": "https://phabricator.wikimedia.org/T271037",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://security.gentoo.org/glsa/202305-24",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://phabricator.wikimedia.org/T271037",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.gentoo.org/glsa/202305-24",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-754"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-754"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. A title blocked by AbuseFilter can be created via Special:ChangeContentModel due to the mishandling of the EditFilterMergedContent hook return value."
    },
    {
      "lang": "es",
      "value": "Se descubrió un problema en MediaWiki antes de 1.35.5, 1.36.x antes de 1.36.3 y 1.37.x antes de 1.37.1. Se puede crear un título bloqueado por AbuseFilter a través de Special:ChangeContentModel debido al mal manejo del valor de retorno del gancho EditFilterMergedContent."
    }
  ],
  "lastModified": "2026-06-17T04:12:53.907",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "99942EE7-37A1-42CD-B392-8ED9362430E2",
              "versionEndExcluding": "1.35.5"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7377A8D6-3B2E-4FD6-820A-4CD632158111",
              "versionEndExcluding": "1.36.3",
              "versionStartIncluding": "1.36.0"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.37.0:-:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0B3400A0-D77C-45D4-8868-73AF0B82B6B0"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.37.0:rc0:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F533BF3B-6FBC-4CA6-A645-A321E20B9804"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.37.0:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7CBE66AB-8BE5-4A96-9B90-8F3238AE7CBC"
            },
            {
              "criteria": "cpe:2.3:a:mediawiki:mediawiki:1.37.0:rc2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "18A9BF2D-7DDF-4C9D-838A-D8BA511A2CD6"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}