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CVE-2026-107221

6.5 · MEDIUM

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

Published Oct 7, 2026excelizeCWE-787EPSS 0.27%

Overview

CVE-2026-107221 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 2.0.0 to 2.11.0, checkRow sizes its target cell slice from the last cell in XML document order and then re-scatters every cell by its explicit column reference. GetCellValue reaches workSheetReader and checkRow, where targetList is too short for an earlier out-of-order cell. When a crafted row places a higher-column cell before a lower-column final cell and a non-streaming worksheet API reads the sheet, the earlier cell's column index exceeds the slice length derived from the final cell, allowing an attacker to cause an unrecovered panic and terminate the 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
excelizeexcelize2.0.0Affected

References

GitHubgithub.com/qax-os/excelize/commit/46a5eb289448e40fbc7d3294589b03861fb822f0GitHubgithub.com/qax-os/excelize/pull/2376GitHubgithub.com/qax-os/excelize/security/advisories/GHSA-8mcq-6wmr-jrjvGitHubgithub.com/qax-os/excelize/security/advisories/GHSA-8mcq-6wmr-jrjv

How CyberStrike helps

Frequently asked questions

What is CVE-2026-107221?

CVE-2026-107221 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-2026-107221?

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-2026-107221?

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-2026-107221?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-107221 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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