CVE-2021-29489
7.6 · HIGHOverview
CVE-2021-29489 is a high-severity vulnerability affecting highcharts highcharts. It was published on May 5, 2021 and has a CVSS 3.1 base score of 7.6 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from highcharts. Update highcharts to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| highcharts | highcharts | >= 0, < 9.0.0 | Affected |
Frequently Asked Questions
What is CVE-2021-29489?
CVE-2021-29489 is a high-severity vulnerability affecting highcharts highcharts. It was published on May 5, 2021 and has a CVSS 3.1 base score of 7.6 (HIGH).
How severe is CVE-2021-29489?
This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-29489?
Check the references section for vendor advisories and patches from highcharts. Update highcharts to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-29489?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-29489 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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