CVE-2026-45149

{"id": "CVE-2026-45149", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-45149", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-01T16:42:12.730782Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/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": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "juliangruber", "product": "brace-expansion", "versions": [{"status": "affected", "version": ">= 5.0.0, < 5.0.6"}]}]}], "published": "2026-05-29T20:16:25.550", "references": [{"url": "https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-jxxr-4gwj-5jf2", "tags": ["Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "The brace-expansion library generates arbitrary strings containing a common prefix and suffix. From 5.0.0 to before 5.0.6, the max option was being applied too late. When expanding a single large numeric range like {1..10000000}, the sequence generation loop generates all 10 million intermediate elements before the max limit is applied With max=10, the output is correctly limited to 10 items, but the process still allocates ~505 MB and spends ~800ms building the full intermediate array. This vulnerability is fixed in 5.0.6."}, {"lang": "es", "value": "La biblioteca brace-expansion genera cadenas arbitrarias que contienen un prefijo y un sufijo comunes. Desde la versi\u00f3n 5.0.0 hasta antes de la 5.0.6, la opci\u00f3n max se estaba aplicando demasiado tarde. Al expandir un \u00fanico rango num\u00e9rico grande como {1..10000000}, el bucle de generaci\u00f3n de secuencia genera los 10 millones de elementos intermedios antes de que se aplique el l\u00edmite max. Con max=10, la salida se limita correctamente a 10 elementos, pero el proceso sigue asignando ~505 MB y gasta ~800ms en construir el array intermedio completo. Esta vulnerabilidad se corrige en la versi\u00f3n 5.0.6."}], "lastModified": "2026-07-22T06:10:00.170", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:juliangruber:brace-expansion:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "E4186426-4293-4F74-9ABE-6F4DD671FADC", "versionEndExcluding": "5.0.6", "versionStartIncluding": "5.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}