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CVE-2021-4306

25
FAUCET Score

CVE-2021-4306 is a high-severity vulnerability (CVSS 7.5) affecting cronvel terminal-kit versions up to 2.1.7, specifically an unknown function that leads to inefficient regular expression complexity. This vulnerability can be exploited remotely with low attack complexity, resulting in a high impact on availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE. Upgrading to terminal-kit version 2.1.8 resolves this issue.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.1.8CPE matchmatch criteria
cpe:2.3:a:terminal-kit_project:terminal-kit:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

3.5LOW

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.1
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.94%
Probability of exploitation in next 30 days
EPSS Percentile
57.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0094 is in the 32nd percentile among its peer group of 51,506 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: terminal-kitFixed in: 2.1.8

Vendor Advisories (1)

npmGHSA-wxgh-8gmr-3qh3high

terminal-kit Inefficient Regular Expression Complexity vulnerability

Jan 7, 2023

References

github.com / cronvel/terminal-kit/commit/a2e446cc3927b559d0281683feb9b821e83b758c
PatchThird Party Advisory
github.com / cronvel/terminal-kit/releases/tag/v2.1.8
Release NotesThird Party Advisory
vuldb.com
Third Party Advisory
vuldb.com
Third Party Advisory