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CVE-2025-27789

Estado: AplazadaMedia (6.2)—

Babel is a compiler for writing next generation JavaScript. When using versions of Babel prior to 7.26.10 and 8.0.0-alpha.17 to compile regular expression named capturing groups, Babel will generate a polyfill for the `.replace` method that has quadratic complexity on some specific replacement pattern strings (i.e. the second argument passed to `.replace`).

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Generated code is vulnerable if all the following conditions are true: Using Babel to compile regular expression named capturing groups, using the `.replace` method on a regular expression that contains named capturing groups, and the code using untrusted strings as the second argument of `.replace`. This problem has been fixed in `@babel/helpers` and `@babel/runtime` 7.26.10 and 8.0.0-alpha.17. It's likely that individual users do not directly depend on `@babel/helpers`, and instead depend on `@babel/core` (which itself depends on `@babel/helpers`). Upgrading to `@babel/core` 7.26.10 is not required, but it guarantees use of a new enough `@babel/helpers` version. Note that just updating Babel dependencies is not enough; one will also need to re-compile the code. No known workarounds are available.

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).

Tecnologías afectadas (4)

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

Babel — BabelAIBabel — Babel CoreAIBabel — Babel HelpersAIBabel — Babel RuntimeAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-27789",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-27789",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-03-11T19:53:22.902147Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.2,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.5
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "babel",
          "product": "babel",
          "versions": [
            {
              "status": "affected",
              "version": "< 7.26.10"
            },
            {
              "status": "affected",
              "version": ">= 8.0.0-alpha.0, < 8.0.0-alpha.17"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-03-11T20:15:18.330",
  "references": [
    {
      "url": "https://github.com/babel/babel/pull/17173",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/babel/babel/security/advisories/GHSA-968p-4wvh-cqc8",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Babel is a compiler for writing next generation JavaScript. When using versions of Babel prior to 7.26.10 and 8.0.0-alpha.17 to compile regular expression named capturing groups, Babel will generate a polyfill for the `.replace` method that has quadratic complexity on some specific replacement pattern strings (i.e. the second argument passed to `.replace`). Generated code is vulnerable if all the following conditions are true: Using Babel to compile regular expression named capturing groups, using the `.replace` method on a regular expression that contains named capturing groups, and the code using untrusted strings as the second argument of `.replace`. This problem has been fixed in `@babel/helpers` and `@babel/runtime` 7.26.10 and 8.0.0-alpha.17. It's likely that individual users do not directly depend on `@babel/helpers`, and instead depend on `@babel/core` (which itself depends on `@babel/helpers`). Upgrading to `@babel/core` 7.26.10 is not required, but it guarantees use of a new enough `@babel/helpers` version. Note that just updating Babel dependencies is not enough; one will also need to re-compile the code. No known workarounds are available."
    },
    {
      "lang": "es",
      "value": "Babel es un compilador para escribir JavaScript de nueva generación. Al usar versiones de Babel anteriores a la 7.26.10 y 8.0.0-alpha.17 para compilar grupos de captura con nombre de expresiones regulares, Babel generará un polyfill para el método `.replace` con complejidad cuadrática en algunas cadenas de patrones de reemplazo específicas (es decir, el segundo argumento pasado a `.replace`). El código generado es vulnerable si se cumplen todas las siguientes condiciones: usar Babel para compilar grupos de captura con nombre de expresiones regulares, usar el método `.replace` en una expresión regular que contenga grupos de captura con nombre y usar cadenas no confiables como segundo argumento de `.replace`. Este problema se ha corregido en `@babel/helpers` y `@babel/runtime` 7.26.10 y 8.0.0-alpha.17. Es probable que los usuarios individuales no dependan directamente de `@babel/helpers`, sino de `@babel/core` (que a su vez depende de `@babel/helpers`). No es necesario actualizar a `@babel/core` 7.26.10, pero garantiza el uso de una versión suficientemente nueva de `@babel/helpers`. Tenga en cuenta que actualizar las dependencias de Babel no es suficiente; también será necesario recompilar el código. No se conocen workarounds."
    }
  ],
  "lastModified": "2026-06-17T09:04:13.763",
  "sourceIdentifier": "security-advisories@github.com"
}