CVE-2026-45249 json
Apache ECharts: XSS in Lines series tooltip rendering
published 2026-05-25 5 mo ago modified 2026-09-10 1 mo ago also GHSA-fgmj-fm8m-jvvx , EUVD-2026-31650
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- npm echarts 6.1.0
- Apache Software Foundation Apache ECharts 6.1.0
- github.com/apache/echarts@1e39b00 commit
- github.com/apache/echarts#21608 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | echarts | <6.1.0 |
6.1.0 |
Affected products
- Apache Software Foundation Apache ECharts
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/apache/echarts/pull/21608
patch, technical-description, web, issue-tracking
-
github.com
/apache/echarts/commit/1e39b00eedda0e4a0b048e099c0e13ce7149d90f
web
-
lists.apache.org
/thread/1g6xk7gd9vg1c6zyqqt2lnko10zomc3o
vendor-advisory, web, mailing-list
-
echarts.apache.org
/en/option.html#series-lines
web, product
-
echarts.apache.org
/handbook/en/best-practices/security/#passing_raw_html_safely
technical-description, web, product
-
openwall.com
/lists/oss-security/2026/05/23/4
web, mailing-list, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-45249
advisory
-
github.com
/apache/echarts
package
Sources
- CVE List CVE-2026-45249
- GitHub Advisory GHSA-fgmj-fm8m-jvvx
- NVD CVE-2026-45249
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.