cronvel terminal-kit up to 2.1.7 redos

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as problematic has been found in cronvel terminal-kit up to 2.1.7. Affected is an unknown code. The manipulation with an unknown input leads to a redos vulnerability. CWE is classifying the issue as CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. This is going to have an impact on availability.

The weakness was published 01/07/2023 as a2e446cc3927b559d0281683feb9b821e83b758c. The advisory is shared for download at This vulnerability is traded as CVE-2021-4306. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1449.003.

Upgrading to version 2.1.8 eliminates this vulnerability. The upgrade is hosted for download at Applying the patch a2e446cc3927b559d0281683feb9b821e83b758c is able to eliminate this problem. The bugfix is ready for download at The best possible mitigation is suggested to be upgrading to the latest version. The advisory contains the following remark:

Fix a possible ReDoS





  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.8

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CNA Base Score: 3.5
CNA Vector (VulDB): 🔒



VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

NVD Base Score: 🔒


Class: Redos
CWE: CWE-1333 / CWE-400 / CWE-404
ATT&CK: T1449.003

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: terminal-kit 2.1.8
Patch: a2e446cc3927b559d0281683feb9b821e83b758c


01/07/2023 Advisory disclosed
01/07/2023 +0 days CVE reserved
01/07/2023 +0 days VulDB entry created
01/29/2023 +22 days VulDB last update


Advisory: a2e446cc3927b559d0281683feb9b821e83b758c
Status: Confirmed

CVE: CVE-2021-4306 (🔒)


Created: 01/07/2023 05:34 PM
Updated: 01/29/2023 11:24 PM
Changes: 01/07/2023 05:34 PM (43), 01/29/2023 11:14 PM (2), 01/29/2023 11:24 PM (28)
Complete: 🔍


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