CVE-2026-45249: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Apache Software Foundation Apache ECharts
Apache ECharts versions prior to 6.1.0 contain a cross-site scripting (XSS) vulnerability in the Lines series tooltip rendering logic. When using Lines series with tooltips and no custom tooltip.formatter, raw HTML content in series.data[i].name can be rendered without proper escaping, potentially allowing script execution. This vulnerability breaks the usual automatic HTML escaping convention in built-in tooltip formatters. The issue is fixed in version 6.1.0.
AI Analysis
Technical Summary
CVE-2026-45249 is a cross-site scripting vulnerability in Apache ECharts affecting versions before 6.1.0. The flaw exists in the Lines series tooltip rendering logic where, if tooltips are enabled without a custom formatter, raw HTML content in the series data name field is rendered without proper escaping. This improper neutralization of input can lead to script execution in the context of the affected web page. The vulnerability is addressed in Apache ECharts version 6.1.0.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the user's browser when viewing tooltips in the Lines series of Apache ECharts. This may lead to information disclosure or manipulation of the web page content. The CVSS score is 6.1 (medium severity), reflecting network attack vector, low complexity, no privileges required, user interaction required, and partial impact on confidentiality and integrity.
Mitigation Recommendations
A fix is available in Apache ECharts version 6.1.0. Users and administrators should upgrade to version 6.1.0 or later to remediate this vulnerability. No official temporary or alternative mitigations are indicated in the provided data.
CVE-2026-45249: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Apache Software Foundation Apache ECharts
Description
Apache ECharts versions prior to 6.1.0 contain a cross-site scripting (XSS) vulnerability in the Lines series tooltip rendering logic. When using Lines series with tooltips and no custom tooltip.formatter, raw HTML content in series.data[i].name can be rendered without proper escaping, potentially allowing script execution. This vulnerability breaks the usual automatic HTML escaping convention in built-in tooltip formatters. The issue is fixed in version 6.1.0.
CVSS v3.1
Score 6.1medium
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-45249 is a cross-site scripting vulnerability in Apache ECharts affecting versions before 6.1.0. The flaw exists in the Lines series tooltip rendering logic where, if tooltips are enabled without a custom formatter, raw HTML content in the series data name field is rendered without proper escaping. This improper neutralization of input can lead to script execution in the context of the affected web page. The vulnerability is addressed in Apache ECharts version 6.1.0.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the user's browser when viewing tooltips in the Lines series of Apache ECharts. This may lead to information disclosure or manipulation of the web page content. The CVSS score is 6.1 (medium severity), reflecting network attack vector, low complexity, no privileges required, user interaction required, and partial impact on confidentiality and integrity.
Mitigation Recommendations
A fix is available in Apache ECharts version 6.1.0. Users and administrators should upgrade to version 6.1.0 or later to remediate this vulnerability. No official temporary or alternative mitigations are indicated in the provided data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-05-11T15:02:11.179Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1403d8a5ae1af1aa75455c
Added to database: 05/25/2026, 08:10:00 UTC
Last enriched: 06/30/2026, 23:55:29 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 83
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.