{"id":"CVE-2026-107224","revision":"f7c2cfa3299d49d58d6253df37b30272","records":[{"revision":"f7c2cfa3299d49d58d6253df37b30272","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-107224","aliases":[],"title":"Excelize: A Zip64 uncompressed-size of 2^63 panics OpenFile/OpenReader","description":"Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.1.0 to 2.11.0, a Zip64 uncompressed size with the high bit set is converted from uint64 to a negative int64 before signed size-limit checks and allocation. ReadZipReader obtains UncompressedSize64 through FileInfo.Size and passes the wrapped negative value to readFile. When a crafted Zip64 entry declares an uncompressed size from 2^63 through 2^64-1 and the workbook is opened, the negative size bypasses unzip limits and reaches make as a negative capacity, allowing an attacker to panic during workbook opening. No fixed version is available as of this review.","state":0,"publishedAt":"2026-10-07T18:53:27.282+00:00","modifiedAt":"2026-10-07T19:30:13.733+00:00","affected":[{"ecosystem":"Vendor product","name":"excelize","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"qax-os\",\n                    \"product\": \"excelize\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 2.1.0, <= 2.11.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/qax-os/excelize/security/advisories/GHSA-fw94-4wwp-w8pw","https://github.com/qax-os/excelize/pull/2369","https://github.com/qax-os/excelize/commit/db93f8d89de71589069a54d1b998af02e3c5f7cd"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107224","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-107224","identifiers":["CVE-2026-107224"]},"retained":false,"historicalAffected":[]}],"coverage":[]}