CVE-2026-59161
Excelize: Streaming GetRows row-bound bypass causes attacker-controlled allocation
Description
Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. Prior to 2.11.0, the streaming worksheet reader used by Rows and GetRows does not enforce the TotalRows limit on the row r attribute, allowing a small XLSX file with a row number above 1048576 and no cell coordinate to make GetRows append empty rows up to the attacker-controlled index and consume excessive memory and CPU. This issue is fixed in version 2.11.0.
INFO
Published Date :
July 10, 2026, 5:17 p.m.
Last Modified :
Oct. 25, 2026, 3:10 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 | HIGH | [email protected] |
Solution
- Update Excelize to version 2.11.0 or later.
- Verify that the TotalRows limit is enforced.
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-2026-59161.
| 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-q5j5-6p94-4gwc | Exploit Vendor Advisory |
| https://github.com/qax-os/excelize/security/advisories/GHSA-q5j5-6p94-4gwc | 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-2026-59161 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-2026-59161
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-2026-59161 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-59161 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.
-
CVE Translated by [email protected]
Oct. 25, 2026
Action Type Old Value New Value Added Translation Title: excelize de qax-os, Description: Excelize es una biblioteca del lenguaje Go para la lectura y escritura de hojas de cálculo de Microsoft Excel. Antes de la versión 2.11.0, el lector de hoja de cálculo en streaming utilizado por Rows y GetRows no aplica el límite de TotalRows en el atributo r de fila, permitiendo que un archivo XLSX pequeño con un número de fila superior a 1048576 y sin coordenadas de celda haga que GetRows añada filas vacías hasta el índice controlado por el atacante y consuma memoria y CPU excesivas. Este problema está solucionado en la versión 2.11.0. -
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-q5j5-6p94-4gwc Types: Exploit, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/qax-os/excelize/security/advisories/GHSA-q5j5-6p94-4gwc Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 14, 2026
Action Type Old Value New Value Added Reference https://github.com/qax-os/excelize/security/advisories/GHSA-q5j5-6p94-4gwc Added SSVC {'id': 'CVE-2026-59161', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-14T01:54:56.568240Z'} -
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, the streaming worksheet reader used by Rows and GetRows does not enforce the TotalRows limit on the row r attribute, allowing a small XLSX file with a row number above 1048576 and no cell coordinate to make GetRows append empty rows up to the attacker-controlled index and consume excessive memory and CPU. 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:H/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-400 Added CWE CWE-770 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-q5j5-6p94-4gwc