Regular Expression Denial of Service Vulnerability in negotiator 0.6.0 and earlier

CVE-2016-10539 · MEDIUM Severity

AV:N/AC:L/AU:N/C:N/I:N/A:P

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.

Learn more about our Web Application Penetration Testing UK.