CVE-2018-20801: In js/parts/SvgRenderer.js in Highcharts JS before 6.1.0, the use of backtracking regular expressions permitte

Q: How do I fix CVE-2018-20801?

highcharts: upgrade to 6.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2018-20801 being exploited?

CVE-2018-20801 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-20801 affect?

CVE-2018-20801 affects highcharts. Severity is high (CVSS 7.5). 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.

Q: How urgent is CVE-2018-20801?

Priority 58/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2018-20801 is a high-severity flaw (CVSS 7.5) affecting highcharts. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.2% (top 12%)
CISA exploited list	No
Weakness	CWE-185
Published	2019-03-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: highcharts

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-03-14 16:29 UTCPublished CVE record published
2026-06-17 01:53 UTCUpdated Record last modified

highcharts highcharts UPGRADE

Affected: < 6.1.0

Fixed in: 6.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy highcharts || rpm -q highcharts || highcharts --version

2. UPGRADE to 6.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade highcharts

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade highcharts

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-20801?

highcharts: upgrade to 6.1.0. Exact commands for each OS are on this page.

Is CVE-2018-20801 being exploited?

CVE-2018-20801 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-20801 affect?

CVE-2018-20801 affects highcharts. Severity is high (CVSS 7.5). 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.

How urgent is CVE-2018-20801?

Priority 58/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-29489 HIGH 7.6 UPGRADE MITIGATE Highcharts JS is a JavaScript charting library based on SVG

References

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