What’s Vulnerable › Vulnerabilities

CVE-2026-59162: Excelize: Negative shared-string index causes panic in GetCellValue and GetRows

• 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-248

Description

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. Prior to 2.11.0, Excelize parses shared-string cell values with strconv.Atoi and checks only the upper bound before indexing the shared string slice, allowing an XLSX file containing a shared-string cell with -1 to trigger sharedStrings[-1] and panic when read through GetCellValue or GetRows. 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-fx5j-qcqg-grpf
• https://github.com/qax-os/excelize/security/advisories/GHSA-fx5j-qcqg-grpf

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