Title: Apache ECharts, Description: Una vulnerabilidad de cross-site scripting (XSS) existe en Apache ECharts en la lógica de renderizado de tooltips de la serie Lines.

Este problema afecta a Apache ECharts: desde versiones anteriores a la 6.1.0.

En versiones anteriores a la 6.1.0, si se utilizan tanto la serie Lines como el tooltip, y no se proporciona un tooltip.formatter especificado por el usuario, y se especifica series.data[i].name, la cadena HTML sin procesar series.data[i].name puede ser renderizada a través del sumidero innerHTML en el contenido del tooltip. Aunque se permite que el tooltip acepte HTML sin procesar proporcionado por el usuario a través de un tooltip.formatter personalizado, los formateadores de tooltip incorporados convencionalmente realizan el escape de HTML automáticamente. Este caso rompe esa convención y puede conducir inesperadamente a la ejecución de scripts cuando se muestran los tooltips.

Se recomienda a los usuarios actualizar a la versión 6.1.0 si utilizan la serie Lines de esta manera, lo que soluciona el problema.

{"timestamp":"2026-05-26T16:17:23.982532Z","id":"CVE-2026-45249","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"Apache Software Foundation","product":"Apache ECharts","defaultStatus":"unaffected","collectionURL":"https://www.npmjs.com/package/","packageName":"echarts","versions":[{"version":"0","lessThan":"6.1.0","versionType":"semver","status":"affected"}]}]

OR
          *cpe:2.3:a:apache:echarts:*:*:*:*:*:*:*:* versions up to (excluding) 6.1.0

Apache Software Foundation: https://echarts.apache.org/en/option.html#series-lines Types: Product

Apache Software Foundation: https://echarts.apache.org/handbook/en/best-practices/security/#passing_raw_html_safely Types: Product

Apache Software Foundation: https://github.com/apache/echarts/pull/21608 Types: Issue Tracking, Patch

Apache Software Foundation: https://lists.apache.org/thread/1g6xk7gd9vg1c6zyqqt2lnko10zomc3o Types: Mailing List, Vendor Advisory

CVE: http://www.openwall.com/lists/oss-security/2026/05/23/4 Types: Mailing List, Third Party Advisory

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

http://www.openwall.com/lists/oss-security/2026/05/23/4

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.

CWE-79

https://echarts.apache.org/en/option.html#series-lines

https://echarts.apache.org/handbook/en/best-practices/security/#passing_raw_html_safely

https://github.com/apache/echarts/pull/21608

https://lists.apache.org/thread/1g6xk7gd9vg1c6zyqqt2lnko10zomc3o