{"cve":"CVE-2026-107224","nvd":{"published":"2026-10-07T19:17:35.140","modified":"2026-10-13T14:17:32.220","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":["CWE-190","CWE-681"],"references":["https://github.com/qax-os/excelize/commit/db93f8d89de71589069a54d1b998af02e3c5f7cd","https://github.com/qax-os/excelize/pull/2369","https://github.com/qax-os/excelize/security/advisories/GHSA-fw94-4wwp-w8pw","https://github.com/qax-os/excelize/security/advisories/GHSA-fw94-4wwp-w8pw"],"products":["excelize:excelize"],"source":"nvd","synced_at":"2026-10-19T22:58:01.639778232+00:00"},"epss":{"cve":"CVE-2026-107224","score":0.00306,"percentile":0.23209,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-fw94-4wwp-w8pw","url":"https://osv.dev/vulnerability/GHSA-fw94-4wwp-w8pw","summary":"Excelize: A Zip64 uncompressed-size of 2^63 panics OpenFile/OpenReader","modified":"2026-10-07T20:30:07.330722837Z","packages":[{"ecosystem":"Go","name":"github.com/xuri/excelize/v2","purl":"pkg:golang/github.com/xuri/excelize/v2","ranges":[">=2.1.0 <2.11.1-0.20260805032953-db93f8d89de7"],"fixed":["2.11.1-0.20260805032953-db93f8d89de7"]}]}],"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."]}