What’s Vulnerable › Vulnerabilities
CVE-2017-16030
- Severity: high (CVSS 7.5 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.1% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2018-06-04 · updated 2026-06-17
- Weakness: CWE-400
Description
Useragent is used to parse useragent headers. It uses several regular expressions to accomplish this. An attacker could edit their own headers, creating an arbitrarily long useragent string, causing the event loop and server to block. This affects Useragent 2.1.12 and earlier.
Affected products
- HackerOne useragent node module: through 2.1.12
References
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