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CVE-2026-21627

Estado: AplazadaCrítica (9.5)—

The vulnerability was rooted in how the Tassos Framework plugin handled specific AJAX requests through Joomla’s com_ajax entry point. Under certain conditions, internal framework functionality could be invoked without proper restriction.

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.

AV:N sin UI:R ni PR indica explotación de aplicación expuesta (T1190). CWE-284 y falta de restricción de AJAX sugieren escalada de privilegios y ejecución de código arbitrario.

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

Vulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkFilter Network TrafficApplication Isolation and Sandboxing

Tecnologías afectadas (2)

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

Joomla — JoomlaAITassos — Tassos FrameworkAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-21627",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-21627",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-02-20T20:42:52.948106Z"
        }
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "security@joomla.org",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 9.5,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "attackRequirements": "PRESENT",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "HIGH",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
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  },
  "affected": [
    {
      "source": "security@joomla.org",
      "affectedData": [
        {
          "vendor": "tassos.gr",
          "product": "Novarain/Tassos Framework (plg_system_nrframework)",
          "versions": [
            {
              "status": "affected",
              "version": "4.10.14–6.0.37"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "tassos.gr",
          "product": "Convert Forms",
          "versions": [
            {
              "status": "affected",
              "version": "3.2.12–5.1.0"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "tassos.gr",
          "product": "EngageBox",
          "versions": [
            {
              "status": "affected",
              "version": "6.0.0–7.1.0"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "tassos.gr",
          "product": "Google Structured Data",
          "versions": [
            {
              "status": "affected",
              "version": "5.1.7–6.1.0"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "tassos.gr",
          "product": "Advanced Custom Fields",
          "versions": [
            {
              "status": "affected",
              "version": "2.2.0–3.1.0"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "tassos.gr",
          "product": "Smile Pack",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.0–2.1.0"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-02-20T15:20:29.467",
  "references": [
    {
      "url": "https://tassos.gr",
      "source": "security@joomla.org"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
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      "source": "security@joomla.org",
      "description": [
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          "value": "CWE-284"
        }
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    },
    {
      "lang": "es",
      "value": "La vulnerabilidad estaba arraigada en cómo el plugin Tassos Framework manejaba solicitudes AJAX específicas a través del punto de entrada com_ajax de Joomla. Bajo ciertas condiciones, la funcionalidad interna del framework podría ser invocada sin la restricción adecuada."
    }
  ],
  "lastModified": "2026-06-17T10:18:50.007",
  "sourceIdentifier": "security@joomla.org"
}