CVE-2025-27789

{"id": "CVE-2025-27789", "cveTags": [], "metrics": {"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}]}, "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 generaci\u00f3n. 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 generar\u00e1 un polyfill para el m\u00e9todo `.replace` con complejidad cuadr\u00e1tica en algunas cadenas de patrones de reemplazo espec\u00edficas (es decir, el segundo argumento pasado a `.replace`). El c\u00f3digo generado es vulnerable si se cumplen todas las siguientes condiciones: usar Babel para compilar grupos de captura con nombre de expresiones regulares, usar el m\u00e9todo `.replace` en una expresi\u00f3n 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 versi\u00f3n suficientemente nueva de `@babel/helpers`. Tenga en cuenta que actualizar las dependencias de Babel no es suficiente; tambi\u00e9n ser\u00e1 necesario recompilar el c\u00f3digo. No se conocen workarounds."}], "lastModified": "2026-04-15T00:35:42.020", "sourceIdentifier": "security-advisories@github.com"}