CVE-2021-29489

Name: CVE-2021-29489
Creator: NVD / NIST
Published: 2021-05-05T16:15:08.023+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.87%

Last modified Jun 17, 2026

CVE-2021-29489 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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. EPSS estimates a 0.87% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.87%

54.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Highcharts	Highcharts	< 9.0.0
Netapp	Cloud Backup	All versions
Netapp	Oncommand Insight	All versions
Netapp	Oncommand Workflow Automation	All versions
Netapp	Snapcenter	All versions

References

https://github.com/highcharts/highcharts/security/advisories/GHSA-8j65-4pcq-xq95Third Party Advisory
https://security.netapp.com/advisory/ntap-20210622-0005/Third Party Advisory
https://github.com/highcharts/highcharts/security/advisories/GHSA-8j65-4pcq-xq95Third Party Advisory
https://security.netapp.com/advisory/ntap-20210622-0005/Third Party Advisory

Timeline

Published: May 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-29489?

How severe is CVE-2021-29489?

CVE-2021-29489 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.87% probability of exploitation in the next 30 days.

How do I fix CVE-2021-29489?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-29489?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST