CVE-2021-29489 json
Options structure open to XSS if passed unfiltered
published 2021-05-05 5 y ago modified 2026-07-08 4 mo ago also GHSA-8j65-4pcq-xq95 , EUVD-2021-1014
- cvss
- 7.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 58%
- public exploits
- 0
- none known
Summary
Highcharts JS is a JavaScript charting library based on SVG. In Highcharts versions 8 and earlier, the chart options structure was not systematically filtered for XSS vectors. The potential impact was that content from untrusted sources could execute code in the end user's browser. The vulnerability is patched in version 9. As a workaround, implementers who are not able to upgrade may apply DOMPurify recursively to the options structure to filter out malicious markup.
Patch / fix
- npm highcharts 9.0.0
- highcharts highcharts 9.0.0
Exploit prediction
0.87% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| GitHub | 3.1 | 7.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | highcharts | <9.0.0 |
9.0.0 |
Affected products
- highcharts highcharts
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/highcharts/highcharts/security/advisories/GHSA-8j65-4pcq-xq95
web, third-party-advisory
-
security.netapp.com
/advisory/ntap-20210622-0005/
third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-29489
advisory
-
github.com
/highcharts/highcharts
package
-
security.netapp.com
/advisory/ntap-20210622-0005
web
-
npmjs.com
/package/highcharts
web
Sources
- CVE List CVE-2021-29489
- GitHub Advisory GHSA-8j65-4pcq-xq95
- NVD CVE-2021-29489
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.