Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets

Overview

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.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

Package advisory (CVE-2026-107220)

Affected packages:

• github.com/xuri/excelize/v2 >= 2.7.1, < 2.11.1-0.20260820023833-99903a3240e5

Patched in:

• github.com/xuri/excelize/v2 2.11.1-0.20260820023833-99903a3240e5

Source: https://github.com/advisories/GHSA-g27h-8qhm-6pff