What’s Vulnerable › Vulnerabilities

CVE-2021-4299: cronvel string-kit naturalSort.js naturalSort redos

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-01-02 · updated 2026-06-17
• Weakness: CWE-1333

Description

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 component. The identifier of this vulnerability is VDB-217180.

Affected products

• cronvel string-kit: before 0.12.8 — fixed in 0.12.8

How to fix

Upgrade to a fixed version: cronvel string-kit 0.12.8. Check the vendor advisory for mitigations.

References

• https://github.com/cronvel/string-kit/commit/9cac4c298ee92c1695b0695951f1488884a7ca73
• https://github.com/cronvel/string-kit/releases/tag/v0.12.8
• https://vuldb.com/?ctiid.217180
• https://vuldb.com/?id.217180
• https://github.com/cronvel/string-kit/commit/9cac4c298ee92c1695b0695951f1488884a7ca73
• https://github.com/cronvel/string-kit/releases/tag/v0.12.8
• https://vuldb.com/?ctiid.217180
• https://vuldb.com/?id.217180

Get alerted when CVE-2021-4299 or the next vulnerability affects your stack