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CVE-2024-34502

Estado: ModificadaCrítica (9.8)—

An issue was discovered in WikibaseLexeme in MediaWiki before 1.39.6, 1.40.x before 1.40.2, and 1.41.x before 1.41.1. Loading Special:MergeLexemes will (attempt to) make an edit that merges the from-id to the to-id, even if the request was not a POST request, and even if it does not contain an edit token.

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 (2)

Fedoraproject — FedoraMediawiki — Mediawiki

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2024-34502",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-34502",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-08-21T19:13:18.117446Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    },
    {
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      "affectedData": [
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          "vendor": "mediawiki",
          "product": "mediawiki",
          "versions": [
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              "status": "affected",
              "version": "0",
              "lessThan": "1.39.6",
              "versionType": "custom"
            },
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              "status": "affected",
              "version": "1.40.0",
              "lessThan": "1.40.2",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "1.41.0",
              "lessThan": "1.41.1",
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          "defaultStatus": "unknown"
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  "published": "2024-05-05T19:15:07.197",
  "references": [
    {
      "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikibaseLexeme/+/1013359",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://phabricator.wikimedia.org/T357101",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikibaseLexeme/+/1013359",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/",
      "tags": [
        "Mailing List",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://phabricator.wikimedia.org/T357101",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in WikibaseLexeme in MediaWiki before 1.39.6, 1.40.x before 1.40.2, and 1.41.x before 1.41.1. Loading Special:MergeLexemes will (attempt to) make an edit that merges the from-id to the to-id, even if the request was not a POST request, and even if it does not contain an edit token."
    },
    {
      "lang": "es",
      "value": "Se descubrió un problema en WikibaseLexeme en MediaWiki antes de 1.39.6, 1.40.x antes de 1.40.2 y 1.41.x antes de 1.41.1. Cargando especial: MergeLexemes (intentará) realizar una edición que combine el ID de origen con el ID de destino, incluso si la solicitud no fue una solicitud POST, e incluso si no contiene un token de edición."
    }
  ],
  "lastModified": "2026-06-17T07:33:31.943",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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              "vulnerable": true,
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              "versionEndExcluding": "1.39.6"
            },
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              "matchCriteriaId": "3EF19DE5-1D79-4001-ABA1-D648AD6610D6",
              "versionEndExcluding": "1.40.2",
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              "versionEndExcluding": "1.41.1",
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          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}