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CVE-2026-59161

7.5 · HIGH

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

Published Jul 10, 2026CWE-400EPSS 0.66%

Overview

CVE-2026-59161 is a high-severity vulnerability. It was published on July 10, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. 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. Prior to 2.11.0, the streaming worksheet reader used by Rows and GetRows does not enforce the TotalRows limit on the row r attribute, allowing a small XLSX file with a row number above 1048576 and no cell coordinate to make GetRows append empty rows up to the attacker-controlled index and consume excessive memory and CPU. This issue is fixed in version 2.11.0.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

GitHubgithub.com/qax-os/excelize/commit/93f0b3caed37f21ef5079e3259c6c21dcfe68453GitHubgithub.com/qax-os/excelize/pull/2331GitHubgithub.com/qax-os/excelize/releases/tag/v2.11.0GitHubgithub.com/qax-os/excelize/security/advisories/GHSA-q5j5-6p94-4gwcGitHubgithub.com/qax-os/excelize/security/advisories/GHSA-q5j5-6p94-4gwc

How CyberStrike helps

Frequently asked questions

What is CVE-2026-59161?

CVE-2026-59161 is a high-severity vulnerability. It was published on July 10, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-59161?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-59161?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2026-59161?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-59161 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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