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CVE-2026-46640

Estado: AnalizadaAlta (8.7)—

Twig is a template language for PHP. From 3.15.0 until 3.26.0, _self.(<string>) and import-alias dynamic attribute syntax can concatenate an attacker-controlled string into a MacroReferenceExpression name without identifier validation, causing raw PHP to be emitted into the generated template source and executed at template-load time. This issue is fixed in version 3.26.0.

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.

Vulnerabilidad remota (AV:N, PR:L) en Twig que inyecta PHP crudo en plantillas generadas, ejecutado al cargar la plantilla. Requiere autenticación pero permite 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

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

Tecnologías afectadas (1)

Symfony — Twig

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-46640",
  "cveTags": [],
  "metrics": {
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          "id": "CVE-2026-46640",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
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              "automatable": "no"
            },
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              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2026-07-15T00:00:00+00:00"
        }
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          "attackVector": "NETWORK",
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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",
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          "privilegesRequired": "LOW",
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          "valueDensity": "NOT_DEFINED",
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          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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      "affectedData": [
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  "published": "2026-07-14T22:16:56.840",
  "references": [
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      "tags": [
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      "tags": [
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      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/twigphp/Twig/security/advisories/GHSA-45vw-wh46-2vx8",
      "tags": [
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      ],
      "source": "security-advisories@github.com"
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  ],
  "vulnStatus": "Analyzed",
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      "description": [
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          "lang": "en",
          "value": "CWE-94"
        }
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      "lang": "en",
      "value": "Twig is a template language for PHP. From 3.15.0 until 3.26.0, _self.(<string>) and import-alias dynamic attribute syntax can concatenate an attacker-controlled string into a MacroReferenceExpression name without identifier validation, causing raw PHP to be emitted into the generated template source and executed at template-load time. This issue is fixed in version 3.26.0."
    }
  ],
  "lastModified": "2026-07-16T05:16:20.063",
  "configurations": [
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          "operator": "OR"
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}