{"cve":"CVE-2026-54063","nvd":{"published":"2026-07-10T17:16:58.440","modified":"2026-10-25T15:10:00.147","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770"],"references":["https://github.com/qax-os/excelize/releases/tag/v2.11.0","https://github.com/qax-os/excelize/security/advisories/GHSA-h69g-9hx6-f3v4","https://github.com/qax-os/excelize/security/advisories/GHSA-h69g-9hx6-f3v4"],"products":["excelize:excelize"],"source":"nvd","synced_at":"2026-10-25T17:50:06.907763985+00:00"},"epss":{"cve":"CVE-2026-54063","score":0.00607,"percentile":0.48737,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-h69g-9hx6-f3v4","url":"https://osv.dev/vulnerability/GHSA-h69g-9hx6-f3v4","summary":"Excelize: Unbounded Row Index Allocation in Worksheet Parser (checkSheet OOM/Panic DoS)","modified":"2026-07-27T17:11:14.047236526Z","packages":[{"ecosystem":"Go","name":"github.com/xuri/excelize/v2","purl":"pkg:golang/github.com/xuri/excelize/v2","ranges":["<2.11.0"],"fixed":["2.11.0"]}]},{"id":"GO-2026-5960","url":"https://osv.dev/vulnerability/GO-2026-5960","summary":"Excelize: Unbounded Row Index Allocation in Worksheet Parser (checkSheet OOM/Panic DoS) in github.com/xuri/excelize","modified":"2026-07-27T17:00:23.372522171Z","packages":[{"ecosystem":"Go","name":"github.com/xuri/excelize/v2","purl":"pkg:golang/github.com/xuri/excelize/v2","ranges":["<2.11.0"],"fixed":["2.11.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}