What is CVE-2026-59162?

CVE-2026-59162 is a high-severity vulnerability in Excelize, classified under CWE-248. CVSS score: 7.5/10. Published 2026-07-10.

How severe is CVE-2026-59162?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Excelize

CVE-2026-59162

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.

Published 2026-07-10 · last modified 2026-07-16.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (49.9th percentile), scored 2026-10-12.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003

Affected products

Excelize
Qax-Os Excelize — versions < 2.11.0

Weakness classification (CWE)

References

github.com/qax-os/excelize/security/advisories/GHSA-fx5j-qcqg-grpf (Exploit, Vendor Advisory)
github.com/qax-os/excelize/pull/2331 (Patch, Issue Tracking)
github.com/qax-os/excelize/commit/93f0b3caed37f21ef5079e3259c6c21dcfe68453 (Patch)
github.com/qax-os/excelize/releases/tag/v2.11.0 (Release Notes)

Frequently asked questions

What is CVE-2026-59162?: CVE-2026-59162 is a high-severity vulnerability in Excelize, classified under CWE-248. CVSS score: 7.5/10. Published 2026-07-10.
How severe is CVE-2026-59162?: High severity. CVSS v3 base score is 7.5 out of 10.