Is CVE-2026-45249 actively exploited?

No active exploitation of CVE-2026-45249 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-45249 be exploited remotely?

Yes. CVE-2026-45249 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-45249?

CVE-2026-45249 has a CVSS score of 6.1 (MEDIUM).

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MEDIUM

CVE-2026-45249

CWE-79Published: May 25, 2026· Updated: May 28, 2026

6.1

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:10.5th

Official 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.

NVD Source

Technical Analysis

CVE-2026-45249 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.