useragent Regular Expression Denial of Service vulnerability

Description

Useragent is a user agent parser for Node.js. All versions as of time of publication contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS).

Recommendation

No fix is available yet. Followings are affected versions:

• <= 2.3.0

References

• GHSA-mgfv-m47x-4wqp
• CVE-2020-26311
• CWE-1333
• CAPEC-310
• OWASP 2021-A6

Related Issues

• @digitalocean/do-markdownit has Type Confusion vulnerability - CVE-2025-59717
• axios Inefficient Regular Expression Complexity vulnerability - CVE-2021-3749
• Parse Server before v3.4.1 vulnerable to Denial of Service - CVE-2019-1020012
• Vite's `server.fs.deny` is bypassed when using `?import&raw` - CVE-2024-45811

Tags:

npm

useragent