{"id":"CVE-2026-107224","summary":"Excelize: A Zip64 uncompressed-size of 2^63 panics OpenFile/OpenReader","details":"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.","aliases":["GHSA-fw94-4wwp-w8pw"],"modified":"2026-10-08T10:45:23.736116269Z","published":"2026-10-07T18:53:27.282Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-190","CWE-681"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107224.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107224.json"},{"type":"FIX","url":"https://github.com/qax-os/excelize/commit/db93f8d89de71589069a54d1b998af02e3c5f7cd"},{"type":"FIX","url":"https://github.com/qax-os/excelize/pull/2369"},{"type":"ADVISORY","url":"https://github.com/qax-os/excelize/security/advisories/GHSA-fw94-4wwp-w8pw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107224"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/qax-os/excelize","events":[{"introduced":"e51aff2d9562bbfb290ef76a948facb6d4660eff"},{"last_affected":"90ff348959dd842cbf3a4fbd93a78afbe18db476"}],"database_specific":{"extracted_events":[{"introduced":"2.1.0"},{"last_affected":"2.11.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v2.11.0","v2.10.1","v2.10.0","v2.9.1","v2.9.0","v2.8.1","v2.8.0","v2.7.1","v2.7.0","v2.6.1","v2.6.0","v2.5.0","v2.4.1","v2.4.0","v2.3.2","v2.3.1","v2.3.0","v2.2.0","v2.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107224.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}