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CVE-2026-54718

Estado: AplazadaAlta (7.2)—

Silverstripe Advanced Workflow is a highly configurable step-based workflow module. Prior to 6.4.5, 7.1.3, and 7.2.1, an attacker with permission to author the advanced workflow email template can place a specially crafted server-side template payload in NotifyUsersWorkflowAction.EmailTemplate. When NotifyUsersWorkflowAction renders the field through the Silverstripe template engine SSTemplateParser, the payload can cause PHP evaluation and arbitrary code execution on the server; the regression coverage is in tests/php/WorkflowEngineTest.php. This issue is fixed in versions 6.4.5, 7.1.3, and 7.2.1.

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.

CVE-2026-54718: vector CVSS con PR:H (acceso remoto con privilegios elevados) indica T1210. La ejecución PHP arbitraria en el servidor vía template injection (SSTemplateParser) es T1059.

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 ManagementDisable or Remove Feature or ProgramVulnerability ScanningThreat Intelligence ProgramRestrict Web-Based ContentNetwork Segmentation

Tecnologías afectadas (2)

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

Silverstripe — Advanced WorkflowAISilverstripe — SilverstripeAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-54718",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-54718",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-31T18:17:05.218921Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.2,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.2
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "silverstripe",
          "product": "silverstripe-advancedworkflow",
          "versions": [
            {
              "status": "affected",
              "version": "< 6.4.5"
            },
            {
              "status": "affected",
              "version": ">= 7.0.0, < 7.1.3"
            },
            {
              "status": "affected",
              "version": ">= 7.2.0, < 7.2.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-08-27T20:17:49.817",
  "references": [
    {
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/commit/28d0b536491e5c68b1c445579bdd1ddc8beaf8bb",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/commit/f170766af992ed2ed3e5f21d127d0d0d3129678b",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/pull/629",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/pull/630",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/6.4.5",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.1.3",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.2.1",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/security/advisories/GHSA-39mm-rwm3-29jp",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://www.silverstripe.org/download/security-releases/cve-2026-54718",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1336"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Silverstripe Advanced Workflow is a highly configurable step-based workflow module. Prior to 6.4.5, 7.1.3, and 7.2.1, an attacker with permission to author the advanced workflow email template can place a specially crafted server-side template payload in NotifyUsersWorkflowAction.EmailTemplate. When NotifyUsersWorkflowAction renders the field through the Silverstripe template engine SSTemplateParser, the payload can cause PHP evaluation and arbitrary code execution on the server; the regression coverage is in tests/php/WorkflowEngineTest.php. This issue is fixed in versions 6.4.5, 7.1.3, and 7.2.1."
    }
  ],
  "lastModified": "2026-09-09T21:09:13.080",
  "sourceIdentifier": "security-advisories@github.com"
}