CVE-2021-4299: A vulnerability classified as problematic was found in cronvel string-kit up to 0.12.7

Routine

MEDIUM 4.3UPGRADE

CVE-2021-4299 is a medium-severity flaw (CVSS 4.3) affecting string kit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability classified as problematic was found in cronvel string-kit up to 0.12.7. This vulnerability affects the function naturalSort of the file lib/naturalSort.js. The manipulation leads to inefficient regular expression complexity. The attack can be initiated remotely. Upgrading to version 0.12.8 is able to address this issue. The name of the patch is 9cac4c298ee92c1695b0695951f1488884a7ca73. It is recommended to upgrade the affected com

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-1333
Published	2023-01-02
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: string kit project

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

Am I affected?

Timeline

2023-01-02 08:15 UTCPublished CVE record published
2026-06-17 04:19 UTCUpdated Record last modified

string kit project string kit UPGRADE

Affected: < 0.12.8

Fixed in: 0.12.8

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls string-kit

2. UPGRADE to 0.12.8

npm install string-kit@">=0.12.8"

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-2021-4299?

string kit: upgrade to 0.12.8. Exact commands for each OS are on this page.

Is CVE-2021-4299 being exploited?

CVE-2021-4299 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-2021-4299 affect?

CVE-2021-4299 affects string kit. Severity is medium (CVSS 4.3). A vulnerability classified as problematic was found in cronvel string-kit up to 0.12.7. This vulnerability affects the function naturalSort of the file lib/naturalSort.js. The manipulation leads to inefficient regular expression complexity.

How urgent is CVE-2021-4299?

Priority 31/100. No elevated risk signals yet.

References

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