What’s Vulnerable › Vulnerabilities
CVE-2016-10539
- Severity: high (CVSS 7.5 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2018-05-31 · updated 2026-06-17
- Weakness: CWE-400
Description
negotiator is an HTTP content negotiator for Node.js and is used by many modules and frameworks including Express and Koa. The header for "Accept-Language", when parsed by negotiator 0.6.0 and earlier is vulnerable to Regular Expression Denial of Service via a specially crafted string.
Affected products
- HackerOne negotiator node module: through 0.6.0
References
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