XSS in Highcharts
CVE-2021-29489
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L.
EPSS exploit prediction
EPSS: 0.009 (58.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/highcharts/highcharts/security/advisories/GHSA-8j65-4pcq-xq95 (Third Party Advisory)
- security.netapp.com/advisory/ntap-20210622-0005/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-29489?
- CVE-2021-29489 is a high-severity vulnerability in Highcharts, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2021-05-05.
- How severe is CVE-2021-29489?
- High severity. CVSS v3 base score is 7.6 out of 10.