High severity · published Jul 10, 2026
CVE-2026-59162
Excelize: Negative shared-string index causes panic in GetCellValue and GetRows
7.5
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EX
excelize · qax-os
< 2.11.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-59162
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59162
Patch
https://github.com/qax-os/excelize/commit/93f0b3caed37f21ef5079e3259c6c21dcfe68453
Issue Tracking
https://github.com/qax-os/excelize/pull/2331
Release Notes
https://github.com/qax-os/excelize/releases/tag/v2.11.0
Exploit
https://github.com/qax-os/excelize/security/advisories/GHSA-fx5j-qcqg-grpf
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