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 2.7.0 to 2.11.0, conditional-format extraction indexes required child slices or dereferences an optional colorScale child without validating malformed rule structure. GetConditionalFormats reaches extractCondFmtCellIs and also indexes ColorScale.Cfvo, DataBar.Cfvo, and DataBar.Color without complete structural checks. When a crafted worksheet supplies a cellIs, dataBar, or colorScale rule missing expected children and the application calls GetConditionalFormats, missing formula, color, value-object, or colorScale data reaches an out-of-range index or nil dereference, allowing an attacker to panic and terminate an unprotected process. 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-2026-107222)

Affected packages:

• github.com/xuri/excelize/v2 >= 2.7.0, < 2.11.1-0.20260812075026-be7a16390fa6

Patched in:

• github.com/xuri/excelize/v2 2.11.1-0.20260812075026-be7a16390fa6

Source: https://github.com/advisories/GHSA-rxcj-4pj5-74gr