What’s Vulnerable › Vulnerabilities

CVE-2026-59161: Excelize: Streaming GetRows row-bound bypass causes attacker-controlled allocation

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-07-10 · updated 2026-10-25
• Weakness: CWE-400

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.

Affected products

• qax-os excelize: before 2.11.0 — fixed in 2.11.0

How to fix

Upgrade to a fixed version: qax-os excelize 2.11.0. Check the vendor advisory for mitigations.

References

• https://github.com/qax-os/excelize/commit/93f0b3caed37f21ef5079e3259c6c21dcfe68453
• https://github.com/qax-os/excelize/pull/2331
• https://github.com/qax-os/excelize/releases/tag/v2.11.0
• https://github.com/qax-os/excelize/security/advisories/GHSA-q5j5-6p94-4gwc
• https://github.com/qax-os/excelize/security/advisories/GHSA-q5j5-6p94-4gwc

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