Medium 6.1Published May 25, 2026

CVE-2026-45249Apache ECharts: XSS in Lines series tooltip rendering

Updated under an hour ago (Oct 26, 2026, 1:30 PM ET)

Does this affect you?

It affects Apache Software Foundation Apache ECharts and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Apache Software Foundation Apache ECharts

Exploited in the last 30 days

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 (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: apache
NVD analysis: Analyzed
Record last updated: May 26, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Apache Software Foundation Apache ECharts apache_software_foundation:apache_echarts (from the name)	before 6.1.0	CNA record
apache echarts apache:echarts	before 6.1.0	NVD

References

References

https://github.com/apache/echarts/pull/21608	patch, technical-description, issue-tracking
https://echarts.apache.org/en/option.html#series-lines	product
https://echarts.apache.org/handbook/en/best-practices/security/#passing_raw_html_safely	technical-description, product
https://lists.apache.org/thread/1g6xk7gd9vg1c6zyqqt2lnko10zomc3o	vendor-advisory, mailing-list
http://www.openwall.com/lists/oss-security/2026/05/23/4	mailing-list, third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.