CVE-2026-59162 | Excelize is a Go language library for reading and writing Mi… | CVSS 6.9 MEDIUM

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.

Metadata

CVE ID: CVE-2026-59162
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-07-02 16:50 UTC
Published: 2026-07-10 15:51 UTC
Last updated: 2026-07-10 18:40 UTC
Primary CWE: CWE-248
CWE-248: Uncaught Exception
Vendor / Product: qax-os / excelize
Sources: cve.org · NVD

Severity & Metrics

6.9 MEDIUM CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
qax-os	excelize	—	< 2.11.0

Weakness (CWE)

CWE	Source	Description
CWE-248	cna	CWE-248: Uncaught Exception
CWE-755	cna	CWE-755: Improper Handling of Exceptional Conditions

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.9	MEDIUM	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

References (4)

https://github.com/qax-os/excelize/security/advisories/GHSA-fx5j-qcqg-grpf https://github.com/qax-os/excelize/security/advisories/GHSA-fx5j-qcqg-grpf
https://github.com/qax-os/excelize/pull/2331 https://github.com/qax-os/excelize/pull/2331
https://github.com/qax-os/excelize/commit/93f0b3caed37f21ef5079e3259c6c21dcfe68453 https://github.com/qax-os/excelize/commit/93f0b3caed37f21ef5079e3259c6c21dcfe68453
https://github.com/qax-os/excelize/releases/tag/v2.11.0 https://github.com/qax-os/excelize/releases/tag/v2.11.0