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CVE-2020-5270

Estado: ModificadaMedia (6.1)—

En PrestaShop entre las versiones 1.7.6.0 y 1.7.6.5, hay un redireccionamiento abierto cuando se usa el parámetro back. Los impactos pueden ser muchos y varían desde el robo de información y credenciales hasta el redireccionamiento a sitios web maliciosos que contienen contenido controlado por los atacantes, que en algunos casos incluso causan ataques de tipo XSS. Entonces, aunque un redireccionamiento abierto puede parecer inofensivo al principio, los impactos de esto pueden ser graves en caso de ser explotables. El problema se corrigió en la versión 1.7.6.5.

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.

Fuente: mapeo oficial MITRE CTID (CVE → ATT&CK).

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

User TrainingUser Account ManagementRestrict Web-Based ContentExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or Program

Tecnologías afectadas (1)

Prestashop — Prestashop

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-5270",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 4.1,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
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        "exploitabilityScore": 2.3
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      {
        "type": "Primary",
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        "cvssData": {
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          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
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        "exploitabilityScore": 2.8
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  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "PrestaShop",
          "product": "PrestaShop",
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              "status": "affected",
              "version": ">= 1.7.6.0, < 1.7.6.5"
            }
          ]
        }
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    }
  ],
  "published": "2020-04-20T17:15:15.507",
  "references": [
    {
      "url": "https://github.com/PrestaShop/PrestaShop/commit/cd2219dca49965ae8421bb5a53fc301f3f23c458",
      "tags": [
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        "Third Party Advisory"
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      "url": "https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-375w-q56h-h7qc",
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      "tags": [
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        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-375w-q56h-h7qc",
      "tags": [
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        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In PrestaShop between versions 1.7.6.0 and 1.7.6.5, there is an open redirection when using back parameter. The impacts can be many, and vary from the theft of information and credentials to the redirection to malicious websites containing attacker-controlled content, which in some cases even cause XSS attacks. So even though an open redirection might sound harmless at first, the impacts of it can be severe should it be exploitable. The problem is fixed in 1.7.6.5"
    },
    {
      "lang": "es",
      "value": "En PrestaShop entre las versiones 1.7.6.0 y 1.7.6.5, hay un redireccionamiento abierto cuando se usa el parámetro back. Los impactos pueden ser muchos y varían desde el robo de información y credenciales hasta el redireccionamiento a sitios web maliciosos que contienen contenido controlado por los atacantes, que en algunos casos incluso causan ataques de tipo XSS. Entonces, aunque un redireccionamiento abierto puede parecer inofensivo al principio, los impactos de esto pueden ser graves en caso de ser explotables. El problema se corrigió en la versión 1.7.6.5."
    }
  ],
  "lastModified": "2026-06-17T03:21:10.420",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:prestashop:prestashop:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7CDA8AA9-C187-4960-B900-46D5A804870D",
              "versionEndExcluding": "1.7.6.5",
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            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}