CVE-2026-45249
Apache ECharts: XSS in Lines series tooltip rendering
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.
INFO
Published Date :
May 25, 2026, 8:16 a.m.
Last Modified :
May 28, 2026, 1:48 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Upgrade Apache ECharts to version 6.1.0.
- Configure custom tooltip formatters.
- Escape user-provided tooltip content.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-45249.
| URL | Resource |
|---|---|
| https://echarts.apache.org/en/option.html#series-lines | Product |
| https://echarts.apache.org/handbook/en/best-practices/security/#passing_raw_html_safely | Product |
| https://github.com/apache/echarts/pull/21608 | Issue Tracking Patch |
| https://lists.apache.org/thread/1g6xk7gd9vg1c6zyqqt2lnko10zomc3o | Mailing List Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2026/05/23/4 | Mailing List Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45249 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45249
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-45249 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45249 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 28, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:apache:echarts:*:*:*:*:*:*:*:* versions up to (excluding) 6.1.0 Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/05/23/4 Types: Mailing List, Third Party Advisory Added Reference Type Apache Software Foundation: https://echarts.apache.org/en/option.html#series-lines Types: Product Added Reference Type Apache Software Foundation: https://echarts.apache.org/handbook/en/best-practices/security/#passing_raw_html_safely Types: Product Added Reference Type Apache Software Foundation: https://github.com/apache/echarts/pull/21608 Types: Issue Tracking, Patch Added Reference Type Apache Software Foundation: https://lists.apache.org/thread/1g6xk7gd9vg1c6zyqqt2lnko10zomc3o Types: Mailing List, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 26, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
May. 25, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/05/23/4 -
New CVE Received by [email protected]
May. 25, 2026
Action Type Old Value New Value Added 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. Added CWE CWE-79 Added Reference https://echarts.apache.org/en/option.html#series-lines Added Reference https://echarts.apache.org/handbook/en/best-practices/security/#passing_raw_html_safely Added Reference https://github.com/apache/echarts/pull/21608 Added Reference https://lists.apache.org/thread/1g6xk7gd9vg1c6zyqqt2lnko10zomc3o