CVE-2026-54063

{"id": "CVE-2026-54063", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-54063", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-10T18:39:45.896640Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "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": "qax-os", "product": "excelize", "versions": [{"status": "affected", "version": "< 2.11.0"}]}]}], "published": "2026-07-10T17:16:58.440", "references": [{"url": "https://github.com/qax-os/excelize/releases/tag/v2.11.0", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/qax-os/excelize/security/advisories/GHSA-h69g-9hx6-f3v4", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/qax-os/excelize/security/advisories/GHSA-h69g-9hx6-f3v4", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. Prior to 2.11.0, the checkSheet() function in github.com/xuri/excelize/v2 uses an attacker-controlled <row r=\"N\"> XML attribute value directly as the length argument to make([]xlsxRow, row) without validating it against the Excel row limit (TotalRows = 1,048,576). A specially crafted XLSX file can trigger two denial-of-service variants: (A) an out-of-memory process kill when r=2147483647 forces a ~16 GB allocation attempt, and (B) a runtime panic via out-of-bounds slice indexing when r=-1. Any service that opens attacker-supplied XLSX files and calls GetCellValue is affected. No authentication is required. This issue is fixed in version 2.11.0."}, {"lang": "es", "value": "Excelize es una biblioteca del lenguaje Go para leer y escribir hojas de c\u00e1lculo de Microsoft Excel. Antes de la versi\u00f3n 2.11.0, la funci\u00f3n checkSheet() en github.com/xuri/excelize/v2 utiliza un valor de atributo XML <row r=\u2019N\u2019> controlado por un atacante directamente como argumento de longitud para make([]xlsxRow, row) sin validarlo contra el l\u00edmite de filas de Excel (TotalRows = 1,048,576). Un archivo XLSX especialmente dise\u00f1ado puede desencadenar dos variantes de denegaci\u00f3n de servicio: (A) una terminaci\u00f3n de proceso por falta de memoria cuando r=2147483647 fuerza un intento de asignaci\u00f3n de ~16 GB, y (B) un p\u00e1nico en tiempo de ejecuci\u00f3n a trav\u00e9s de la indexaci\u00f3n de segmentos fuera de l\u00edmites cuando r=-1. Cualquier servicio que abra archivos XLSX suministrados por un atacante y llame a GetCellValue se ve afectado. No se requiere autenticaci\u00f3n. Este problema se solucion\u00f3 en la versi\u00f3n 2.11.0."}], "lastModified": "2026-10-25T15:10:00.147", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:excelize:excelize:*:*:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "3109CFB1-75AF-4979-A10A-21F859C5D249", "versionEndExcluding": "2.11.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}