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.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-rxcj-4pj5-74gr Excelize: GetConditionalFormats indexes conditional-formatting rule sub-elements with no length or nil check
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 07 Oct 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Qax-os
Qax-os excelize
Vendors & Products Qax-os
Qax-os excelize

Wed, 07 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Excelize: GetConditionalFormats indexes conditional-formatting rule sub-elements with no length or nil check
Weaknesses CWE-129
CWE-476
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-07T18:45:20.249Z

Reserved: 2026-10-07T14:34:14.816Z

Link: CVE-2026-107222

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-07T19:17:34.800

Modified: 2026-10-07T19:17:34.800

Link: CVE-2026-107222

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-07T20:45:07Z

Weaknesses