CVE-2026-59162
Excelize: Negative shared-string index causes panic in GetCellValue and GetRows
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.
INFO
Published Date :
July 10, 2026, 5:17 p.m.
Last Modified :
July 16, 2026, 1:44 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update the Excelize library to version 2.11.0 or newer.
- Validate shared string cell inputs rigorously.
- Ensure proper error handling for unexpected values.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-59162.
| URL | Resource |
|---|---|
| https://github.com/qax-os/excelize/commit/93f0b3caed37f21ef5079e3259c6c21dcfe68453 | Patch |
| https://github.com/qax-os/excelize/pull/2331 | Issue Tracking Patch |
| https://github.com/qax-os/excelize/releases/tag/v2.11.0 | Release Notes |
| https://github.com/qax-os/excelize/security/advisories/GHSA-fx5j-qcqg-grpf | Exploit Vendor Advisory |
| https://github.com/qax-os/excelize/security/advisories/GHSA-fx5j-qcqg-grpf | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-59162 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-59162
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-59162 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-59162 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 16, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:excelize:excelize:*:*:*:*:*:go:*:* versions up to (excluding) 2.11.0 Added Reference Type GitHub, Inc.: https://github.com/qax-os/excelize/commit/93f0b3caed37f21ef5079e3259c6c21dcfe68453 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/qax-os/excelize/pull/2331 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/qax-os/excelize/releases/tag/v2.11.0 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/qax-os/excelize/security/advisories/GHSA-fx5j-qcqg-grpf Types: Exploit, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/qax-os/excelize/security/advisories/GHSA-fx5j-qcqg-grpf Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 10, 2026
Action Type Old Value New Value Added Reference https://github.com/qax-os/excelize/security/advisories/GHSA-fx5j-qcqg-grpf Added SSVC {'id': 'CVE-2026-59162', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-10T18:40:21.218933Z'} -
New CVE Received by [email protected]
Jul. 10, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'qax-os', 'product': 'excelize', 'versions': [{'status': 'affected', 'version': '< 2.11.0'}]}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-248 Added CWE CWE-755 Added Reference https://github.com/qax-os/excelize/commit/93f0b3caed37f21ef5079e3259c6c21dcfe68453 Added Reference https://github.com/qax-os/excelize/pull/2331 Added Reference https://github.com/qax-os/excelize/releases/tag/v2.11.0 Added Reference https://github.com/qax-os/excelize/security/advisories/GHSA-fx5j-qcqg-grpf