Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-107224

CVE-2026-107224MEDIUM

qax-os excelize — Excelize: A Zip64 uncompressed-size of 2^63 panics OpenFile/OpenReader

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  U  N  N  H    6.5   .0031   21.9     —

AFFECTED
  Product   Versions               Fixed
  excelize  >= 2.1.0, <= 2.11.0 –  —

TIMELINE
  Oct 7   Reserved by GitHub_M
  Oct 7   Published (CNA: GitHub_M)
  Oct 13  EXPLOIT PUBLISHED — CVE-2026-107224 (qax-os excelize). Public exploit reference added.

CWE-190, CWE-681 · CNA: GitHub_M · CVSS v3.1 · 3 references · NVD 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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
October 7, 2026	Reserved	Reserved by GitHub_M
October 7, 2026	Published	Published (CNA: GitHub_M)
October 13, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-107224 (qax-os excelize). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
qax-os	excelize	—	>= 2.1.0, <= 2.11.0	—

Weaknesses

CWE-190 · CWE-681

References (3)

https://github.com/qax-os/excelize/commit/db93f8d89de71589069a54d1b998af02e3c5f7cd [Patch]
https://github.com/qax-os/excelize/pull/2369 [Issue Tracking, Patch]
https://github.com/qax-os/excelize/security/advisories/GHSA-fw94-4wwp-w8pw [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-107224 at cve.org

Vendors: qax-os

Weaknesses: CWE-190 · CWE-681

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-107224 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.