CVE-2021-4306

Name: CVE-2021-4306
Creator: NVD / NIST
Published: 2023-01-07T17:15:09.58+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.94%

Last modified Jun 17, 2026

CVE-2021-4306 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A vulnerability classified as problematic has been found in cronvel terminal-kit up to 2.1.7. Affected is an unknown function. EPSS estimates a 0.94% chance of exploitation in the next 30 days.

Description

A vulnerability classified as problematic has been found in cronvel terminal-kit up to 2.1.7. Affected is an unknown function. The manipulation leads to inefficient regular expression complexity. Upgrading to version 2.1.8 is able to address this issue. The name of the patch is a2e446cc3927b559d0281683feb9b821e83b758c. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-217620.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.94%

56.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1333

Affected Software

Vendor	Product	Versions
Terminal-Kit Project	Terminal-Kit	< 2.1.8

References

https://github.com/cronvel/terminal-kit/commit/a2e446cc3927b559d0281683feb9b821e83b758cPatch, Third Party Advisory
https://github.com/cronvel/terminal-kit/releases/tag/v2.1.8Release Notes, Third Party Advisory
https://vuldb.com/?ctiid.217620Third Party Advisory
https://vuldb.com/?id.217620Third Party Advisory
https://github.com/cronvel/terminal-kit/commit/a2e446cc3927b559d0281683feb9b821e83b758cPatch, Third Party Advisory
https://github.com/cronvel/terminal-kit/releases/tag/v2.1.8Release Notes, Third Party Advisory
https://vuldb.com/?ctiid.217620Third Party Advisory
https://vuldb.com/?id.217620Third Party Advisory

Timeline

Published: Jan 7, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4306?

How severe is CVE-2021-4306?

CVE-2021-4306 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.94% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4306?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-4306?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST