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CVE-2026-100238

Estado: Pendiente de análisisMedia (6.1)—

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Flow Extension allows Stored XSS.

This issue affects Mediawiki - Flow Extension: from * before 1.46.1, 1.45.5, 1.43.10.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

XSS almacenado en Flow Extension (CWE-79) permite inyectar scripts en páginas web (T1189). AV:N/UI:R confirma requiere interacción del usuario. Impactos: ejecución de JavaScript en navegador (T1059.007), exfiltración de datos de sesión (T1005), secuestro de cuenta (T1098).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Restrict Web-Based ContentDisable or Remove Feature or ProgramUser TrainingUser Account ManagementRestrict File and Directory PermissionsPrivileged Account Management

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Wikimedia — Mediawiki Flow ExtensionAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-100238",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-100238",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-30T18:40:56.402418Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "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": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
      "affectedData": [
        {
          "repo": "https://gerrit.wikimedia.org/g/mediawiki/extensions/Flow/+/refs/heads/master",
          "vendor": "Wikimedia Foundation",
          "product": "Mediawiki - Flow Extension",
          "versions": [
            {
              "status": "affected",
              "version": "*",
              "lessThan": "1.46.1, 1.45.5, 1.43.10",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-09-29T17:17:00.873",
  "references": [
    {
      "url": "https://gerrit.wikimedia.org/r/q/Ic6149363fe1de2440240fe88aebfd4ae30cea606",
      "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"
    },
    {
      "url": "https://phabricator.wikimedia.org/T432425",
      "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Flow Extension allows Stored XSS.\n\nThis issue affects Mediawiki - Flow Extension: from * before 1.46.1, 1.45.5, 1.43.10."
    }
  ],
  "lastModified": "2026-09-30T21:16:52.980",
  "sourceIdentifier": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"
}