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CVE-2026-15426

Estado: AplazadaAlta (8.8)—

The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 10.11.1. This is due to the plugin not properly verifying that a user is authorized to perform an action.

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This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the BCC field of the acy_notification_cms notification template, causing subsequent WordPress password-reset emails — including those targeting administrator accounts — to be silently copied to an attacker-controlled address, enabling account takeover via the captured reset link. Successful exploitation requires the site administrator to have enabled the "Send website emails with AcyMailing" option, which routes WordPress core notification emails through AcyMailing's templating system.

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.

Acceso remoto autenticado (AV:N, PR:L) sin interacción para manipular plantillas de correo y capturar enlaces de restablecimiento de contraseña de administrador, permitiendo secuestro de cuentas.

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

Privileged Account ManagementUser Account ManagementNetwork SegmentationApplication Developer GuidanceActive Directory ConfigurationVulnerability Scanning

Tecnologías afectadas (1)

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

Acymailing — AcymailingAI

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-15426",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-15426",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-12T16:05:40.310260Z"
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    "cvssMetricV31": [
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
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      "affectedData": [
        {
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          "product": "AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress",
          "versions": [
            {
              "status": "affected",
              "version": "0",
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  "published": "2026-08-11T19:17:20.447",
  "references": [
    {
      "url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/10.10.2/back/Classes/MailClass.php#L1496",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/10.10.2/back/Controllers/Dashboard/Walkthrough.php#L222",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/10.10.2/back/Controllers/Mails/Edition.php#L344",
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      "url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/10.10.2/back/Core/AcymController.php#L99",
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    {
      "url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/10.10.2/back/WpInit/Router.php#L122",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://plugins.trac.wordpress.org/changeset/3632690/acymailing",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/0c187d78-9f1d-4e55-a611-755ee30f855b?source=cve",
      "source": "security@wordfence.com"
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  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@wordfence.com",
      "description": [
        {
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          "value": "CWE-269"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 10.11.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the BCC field of the acy_notification_cms notification template, causing subsequent WordPress password-reset emails — including those targeting administrator accounts — to be silently copied to an attacker-controlled address, enabling account takeover via the captured reset link. Successful exploitation requires the site administrator to have enabled the \"Send website emails with AcyMailing\" option, which routes WordPress core notification emails through AcyMailing's templating system."
    }
  ],
  "lastModified": "2026-08-12T21:00:52.257",
  "sourceIdentifier": "security@wordfence.com"
}