CVE-2021-29489: Highcharts

Medium severity, CVSS 5.4. EPSS: 0.9% chance of exploitation in the next 30 days.

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.

Affected products

• Highcharts Highcharts: before 9.0.0 (fixed in 9.0.0)
• Netapp Cloud Backup: affected versions not specified
• Netapp Oncommand Insight: affected versions not specified
• Netapp Oncommand Workflow Automation: affected versions not specified
• Netapp Snapcenter: affected versions not specified

Published 2021-05-05. Last modified 2026-06-17.