Regular Expression Denial of Service in validator

Description

Versions of validator prior to 3.22.1 are affected by a regular expression denial of service vulnerability in the isURL method.

Recommendation

Update the validator package to the latest compatible version. Followings are version details:

• Affected version(s): < 3.22.1
• Patched version(s): 3.22.1

References

• GHSA-f5w6-r7rg-mcgq
• www.npmjs.com
• snyk.io
• CVE-2014-8882
• CWE-400
• CAPEC-310
• OWASP 2021-A6

Related Issues

• Signal K Server has an Unauthenticated Regular Expression Denial of Service (ReDoS) via WebSocket Subscription Paths - CVE-2026-39320
• Showdown vulnerable to Regular Expression Denial of Service (ReDoS) in link/anchor parsing - CVE-2024-1899
• es5-ext vulnerable to Regular Expression Denial of Service in `function#copy` and `function#toStringTokens` - CVE-2024-27088
• Parse Server has Regular Expression Denial of Service (ReDoS) via `$regex` query in LiveQuery - CVE-2026-30925

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How to Secure your NodeJs Express Javascript Application - part 1

How to Secure your NodeJs Express Javascript Application - part 2

10 Secure Coding Best Practices to Follow in Every Project

Tags:

npm

validator