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CVE-2026-41518— Chartbrew has a stored DOM XSS via Chart Tooltip innerHTML (ChartDatasetConfig.legend)

CVSS 7.6 · High EPSS 0.20% · P10

Affected Version Matrix 1

VendorProductVersion RangeStatus
chartbrewchartbrew>= 4.9.0, < 5.0.1affected
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I. Basic Information for CVE-2026-41518

Vulnerability Information
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Vulnerability Title
Chartbrew has a stored DOM XSS via Chart Tooltip innerHTML (ChartDatasetConfig.legend)
Source: CVE Program / CVE List V5
Vulnerability Description
Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. In versions 4.9.0 through 5.0.0, an authenticated user with project-editor permissions can store arbitrary HTML/JavaScript in the `ChartDatasetConfig.legend` field. The payload is persisted verbatim in the database, propagated through the Chart.js rendering pipeline, and injected into the tooltip DOM element via an unguarded `innerHTML` assignment in `ChartTooltip.js`. Every unauthenticated viewer of the public dashboard triggers JavaScript execution on page load — no hover interaction is required. Browser-based Playwright verification confirmed `alert('localhost')` fires immediately and `<img src="x" onerror="alert(document.domain)">` is present in the `#chartjs-tooltip` DOM element. Version 5.0.1 contains a fix.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
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
chartbrew 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
chartbrew是Chartbrew开源的一个数据可视化与仪表盘构建工具。 chartbrew 4.9.0版本至5.0.0版本存在跨站脚本漏洞，该漏洞源于ChartDatasetConfig.legend字段未清理HTML/JavaScript，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

VendorProductAffected VersionsCPESubscribe
chartbrewchartbrew >= 4.9.0, < 5.0.1 -

II. Public POCs for CVE-2026-41518

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 6107 chars
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III. Intelligence Information for CVE-2026-41518

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Vendor Advisories for CVE-2026-41518 (1)

IV. Related Vulnerabilities

Same product: chartbrew
Same vendor: chartbrew
Same weakness: CWE-79

V. Comments for CVE-2026-41518

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