CVE-2026-54063Public exploitNetwork attack vector

Application crash via unchecked worksheet row index

Published Jul 10, 2026 · Updated Jul 10, 2026

Denial of service in QI-ANXIN GROUP Excelize before 2.11.0 allows remote attackers to crash Go applications via crafted XLSX files. The checkSheet function uses the untrusted XML row r attribute as the length for make([]xlsxRow, row) without enforcing the 1,048,576-row limit, causing memory exhaustion for huge values or out-of-bounds indexing for negative values. Exposure requires an application to parse attacker-supplied spreadsheets through a cell-reading API; successful exploitation kills or panics the host process without reading or altering data.

CVSS severity7.5
High
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in QI-ANXIN GROUP Excelize before 2.11.0 allows remote attackers to crash Go applications via crafted XLSX files. The checkSheet function uses the untrusted XML row r attribute as the length for make([]xlsxRow, row) without enforcing the 1,048,576-row limit, causing memory exhaustion for huge values or out-of-bounds indexing for negative values. Exposure requires an application to parse attacker-supplied spreadsheets through a cell-reading API; successful exploitation kills or panics the host process without reading or altering data.

The record

CVE
CVE-2026-54063
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
QI-ANXIN GROUP
Product
Excelize
Classifications
CWE-770, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.11.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

QI-ANXIN GROUP · Excelizeversion=< 2.11.0

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

Public exploit references

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Technologies

Your stack

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Your stack

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