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CVE-2018-20801

26
FAUCET Score

CVE-2018-20801 describes a Regular Expression Denial of Service (ReDoS) vulnerability in Highcharts JS versions prior to 6.1.0, specifically within the js/parts/SvgRenderer.js component. This flaw, rated 7.5 HIGH, allows an unauthenticated attacker to remotely trigger a denial of service by exploiting backtracking regular expressions with low attack complexity. While the vulnerability has a high potential impact on availability, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.1.0CPE matchmatch criteria
cpe:2.3:a:highcharts:highcharts:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.17%
Probability of exploitation in next 30 days
EPSS Percentile
86.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0317 is in the 76th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: highchartsFixed in: 6.1.0

Vendor Advisories (1)

npmGHSA-xmc8-cjfr-phx3high

Regular Expression Denial of Service in highcharts

Mar 18, 2019

References

github.com / highcharts/highcharts/commit/7c547e1e0f5e4379f94396efd559a566668c0dfa
PatchThird Party Advisory
security.netapp.com / advisory/ntap-20190715-0001
snyk.io / vuln/npm:highcharts:20180225
ExploitThird Party Advisory