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-2026-107220

CVE-2026-107220MEDIUM

qax-os excelize — Excelize: Panic in cellInRange on a worksheet with an empty mergeCell ref

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  U  N  N  H    6.5   .0025   14.8     —

AFFECTED
  Product   Versions               Fixed
  excelize  >= 2.7.1, <= 2.11.0 –  —

TIMELINE
  Oct 7   Reserved by GitHub_M
  Oct 7   Published (CNA: GitHub_M)
  Oct 13  EXPLOIT PUBLISHED — CVE-2026-107220 (qax-os excelize). Public exploit reference added.

CWE-125, CWE-129 · 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 2.7.1 to 2.11.0, mergeCellsParser leaves the cached rectangle empty for an empty mergeCell ref and then passes that empty slice to cellInRange without a length check. GetCellValue reaches mergeCellsParser, which passes an empty rectangle derived from the mergeCell ref attribute into cellInRange. When a crafted worksheet contains an empty mergeCell ref and a non-streaming cell API reads the worksheet, cellInRange indexes four positions in an empty slice, allowing an attacker to panic on the first affected cell operation. 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-2026-107220 (qax-os excelize). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
qax-os	excelize	—	>= 2.7.1, <= 2.11.0	—

Weaknesses

CWE-125 · CWE-129

References (3)

https://github.com/qax-os/excelize/commit/99903a3240e58a47ff28fb8e05a03bd9d496ec24 [Patch]
https://github.com/qax-os/excelize/pull/2379 [Issue Tracking, Patch]
https://github.com/qax-os/excelize/security/advisories/GHSA-g27h-8qhm-6pff [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-107220 at cve.org

Vendors: qax-os

Weaknesses: CWE-125 · CWE-129

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-107220 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.