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CVE-2026-107222

6.5 · MEDIUM

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

Published Oct 7, 2026excelizeCWE-129EPSS 0.27%

Overview

CVE-2026-107222 is a medium-severity vulnerability affecting excelize excelize. It was published on October 7, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from excelize. Update excelize to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
excelizeexcelize2.7.0Affected

References

GitHubgithub.com/qax-os/excelize/commit/be7a16390fa69c71d3ca618c741d1a2b5ed362cdGitHubgithub.com/qax-os/excelize/pull/2375GitHubgithub.com/qax-os/excelize/security/advisories/GHSA-rxcj-4pj5-74grGitHubgithub.com/qax-os/excelize/security/advisories/GHSA-rxcj-4pj5-74gr

How CyberStrike helps

Frequently asked questions

What is CVE-2026-107222?

CVE-2026-107222 is a medium-severity vulnerability affecting excelize excelize. It was published on October 7, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-107222?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-107222?

Check the references section for vendor advisories and patches from excelize. Update excelize to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-107222?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-107222 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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