CVE-2026-45249
CVE-2026-45249 · Apache ECharts: XSS in Lines series tooltip rendering
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.1 · Medium · EPSS 0.7% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
apache echarts
- Versions
- ≥ 0, < 6.1.0: Affected (semver)
Update to 6.1.0
echarts npm
- Affected ranges
- SEMVER: < 6.1.0
Update to 6.1.0
Original sources
- https://github.com/apache/echarts/pull/21608
- https://echarts.apache.org/en/option.html#series-lines
- https://echarts.apache.org/handbook/en/best-practices/security/#passing_raw_html_safely
- https://lists.apache.org/thread/1g6xk7gd9vg1c6zyqqt2lnko10zomc3o
- http://www.openwall.com/lists/oss-security/2026/05/23/4
- https://nvd.nist.gov/vuln/detail/CVE-2026-45249