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CVE-2026-81290

Estado: AplazadaAlta (7.1)—

Unauthenticated Cross Site Scripting (XSS) in Email Subscribers & Newsletters <= 5.9.33 versions.

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 sin autenticación (CWE-79) en aplicación web accesible remotamente. UI:R requiere interacción del usuario para ejecutar scripts maliciosos en navegador.

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 ContentUser TrainingRestrict File and Directory PermissionsRemote Data StorageExecution PreventionBehavior Prevention on Endpoint

Tecnologías afectadas (1)

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

Email Subscribers AND Newsletters — Email Subscribers AND NewslettersAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-81290",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-81290",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-01T14:42:18.960809Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "audit@patchstack.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.7,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "audit@patchstack.com",
      "affectedData": [
        {
          "vendor": "Icegram",
          "product": "Email Subscribers & Newsletters",
          "versions": [
            {
              "status": "affected",
              "changes": [
                {
                  "at": "5.9.34",
                  "status": "unaffected"
                }
              ],
              "version": "n/a",
              "versionType": "custom",
              "lessThanOrEqual": "5.9.33"
            }
          ],
          "packageName": "email-subscribers",
          "collectionURL": "https://wordpress.org/plugins",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-08-31T21:17:49.930",
  "references": [
    {
      "url": "https://patchstack.com/database/wordpress/plugin/email-subscribers/vulnerability/wordpress-email-subscribers-newsletters-plugin-5-9-33-cross-site-scripting-xss-vulnerability?_s_id=cve",
      "source": "audit@patchstack.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "audit@patchstack.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Unauthenticated Cross Site Scripting (XSS) in Email Subscribers & Newsletters <= 5.9.33 versions."
    }
  ],
  "lastModified": "2026-09-01T20:48:22.513",
  "sourceIdentifier": "audit@patchstack.com"
}