CVE-2026-45249— Apache ECharts: XSS in Lines series tooltip rendering
Quick assessment
Affected
Apache Software Foundation Apache ECharts
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Apache ECharts是美国阿帕奇（Apache）基金会的一个数据可视化图表库。 Apache ECharts 6.1.0之前版本存在安全漏洞，该漏洞源于Lines系列工具提示渲染逻辑中未对HTML字符串进行转义，可能导致跨站脚本攻击。
Possible ATT&CK Techniques 1 AI
T1189 · Drive-by CompromiseAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Apache Software Foundation | Apache ECharts | < 6.1.0 |
affected |
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I. Basic Information for CVE-2026-45249
Vulnerability Information
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Vulnerability Title
Apache ECharts: XSS in Lines series tooltip rendering
Source: CVE Program / CVE List V5
Vulnerability Description
A cross-site scripting (XSS) vulnerability exists in Apache ECharts in the Lines series tooltip rendering logic.
This issue affects Apache ECharts: from before 6.1.0.
In versions prior to 6.1.0, if both Lines series and tooltip are used, and no user-specified tooltip.formatter is provided, and series.data[i].name is specified, raw HTML string series.data[i].name can be rendered through innerHTML sink into tooltip content. Although tooltip is allowed to accept user-provided raw HTML via a custom tooltip.formatter, the built-in tooltip formatters conventionally perform HTML escaping automatically. This case breaks that convention and may unexpectedly lead to script execution when tooltips are displayed.
Users are recommended to upgrade to version 6.1.0 if using the Lines series in this way, which fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Apache ECharts 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache ECharts是美国阿帕奇（Apache）基金会的一个数据可视化图表库。 Apache ECharts 6.1.0之前版本存在安全漏洞，该漏洞源于Lines系列工具提示渲染逻辑中未对HTML字符串进行转义，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache ECharts | 0 ~ 6.1.0 | - |
|
II. Public POCs for CVE-2026-45249
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-45249 (1)
Mailing List Discussions for CVE-2026-45249 (1)
Other References for CVE-2026-45249 (2)
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🔗 Security Guidelines - Best Practices - Handbook - Apache ECharts Read full article technical-description
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V. Comments for CVE-2026-45249
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