What is CVE-2018-20801?

CVE-2018-20801 is a high-severity vulnerability in Highcharts, classified under Incorrect Regular Expression. CVSS score: 7.5/10. Published 2019-03-14.

How severe is CVE-2018-20801?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2018-20801 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Highcharts

CVE-2018-20801

In js/parts/SvgRenderer.js in Highcharts JS before 6.1.0, the use of backtracking regular expressions permitted an attacker to conduct a denial of service attack against the SVGRenderer component, aka ReDoS.

Published 2019-03-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.032 (87.8th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000

Affected products

Highcharts

Weakness classification (CWE)

CWE-185 — Incorrect Regular Expression

Public proof-of-concept exploits

ossf-cve-benchmark/CVE-2018-20801

References

snyk.io/vuln/npm:highcharts:20180225 (Exploit, Third Party Advisory)
github.com/highcharts/highcharts/commit/7c547e1e0f5e4379f94396efd559a566668c0dfa (Patch, Third Party Advisory)
security.netapp.com/advisory/ntap-20190715-0001/

Frequently asked questions

What is CVE-2018-20801?: CVE-2018-20801 is a high-severity vulnerability in Highcharts, classified under Incorrect Regular Expression. CVSS score: 7.5/10. Published 2019-03-14.
How severe is CVE-2018-20801?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2018-20801 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.