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 2.8.0 to 2.11.0, GetStyle's fill, border, and font extraction predicates check only upper bounds for attacker-controlled style-table indices. File.GetStyle relies on extractStyleCondFuncs predicates that allow negative FillID, BorderID, and FontID values to reach slice indexing. When a crafted styles.xml supplies a negative fillId, borderId, or fontId and the application reads the style, a negative identifier passes the upper-bound-only predicate and becomes a negative slice index, allowing an attacker to panic while reading cell styling. 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-2026-107225)

Affected packages:

• github.com/xuri/excelize/v2 >= 2.8.0, < 2.11.1-0.20260731010303-ae2113b410e5

Patched in:

• github.com/xuri/excelize/v2 2.11.1-0.20260731010303-ae2113b410e5

Source: https://github.com/advisories/GHSA-5h23-36rv-pm65